If you suddenly see a system icon or an application icon that has a blue and yellow shield or icon overlay at the corner, this indicates that the application has to run with admin privileges and each time you run these kinds of applications, a UAC or User Account Control prompt will appear to confirm if you really want to run the application. Although this kind of behavior is for security reasons, it can get quite annoying especially if you use the application on a daily basis. To make it convenient for you, this post will walk you through how you can remove the blue and yellow shield icon from an application on your Windows 10 computer. The User Account Control or UAC setting is the one that ensures no program can run with administrative privileges unless it is allowed by the user. This stops any program that could be potentially harmful to the computer from making any changes which are why keeping this setting to its default state is for the best and making any changes in its setting is not recommended unless it is really needed. So if you really have to remove the icon overlay in an application, there are several ways you can do that. You can try reinstalling the program and set Compatibility or change the UAC level. For more information, refer to every option given below.

Option 1 – Try to reinstall the application and set Compatibility

As you know, the application icons where you can see the shields are shortcuts mostly and they signify that the User Account Control will appear each time you launch the app. Thus, if you have an app that you use regularly and you’re certain that the app can be trusted, you can try to reinstall the app and set its compatibility by following these steps:

• You need to uninstall the app first and then install its latest version. You must not run or open the app after you reinstall it, not until you’ve completed the steps.
• Next, you have to right-click on the shortcut icon of the app, and from the menu, select Properties.
• Afterward, go to the Compatibility tab and look for the checkbox labeled “Run this program as an administrator” and uncheck it.
• Now click on the Apply and OK buttons to save the changes made. This should remove the shield icon from the app.

Option 2 – Try changing the UAC level

• Tap the Win + Q to open the search bar and type UAC to see the User Account Control setting.
• From the UAC setting, lower the UAC level by selecting the settings that say, “Notify only when apps try to make changes to my computer”.
• After selecting that option, you shouldn’t be getting any warning now when you run the app with the shield icon. But keep in mind that this is not a temporary setting which can be risky especially if the app can’t be trusted.

Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent. Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server. Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation. Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught. Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging. This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses. As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last. Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs. The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter. Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch. The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries. The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms. Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage. Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red. Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic. The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note. The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million. Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack. Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million. Other notable viruses The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years: Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove. Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India. Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably. Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather. Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries. Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.” Explorezip: This worm used fake emails to spread to every machine on thousands of local networks. Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million. Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs. Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates. Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.

When experiencing internet connection problems, most users run the built-in troubleshooter to fix the problem. However, you might come across another problem when instead of fixing the problem, the troubleshooter throws up an error message saying, “The Windows Wireless Service is not running on this computer”. After displaying this error message, the troubleshooter would exit. Usually, this kind of error indicates that Windows has failed to initialize the wireless service so it can start searching for broadcast signals and try to connect to them. So in this post, we have prepared some workarounds that might help you resolve the issue.

Option 1 – Try to check the WLAN Status

You have to make sure that the wireless service is enabled in your computer before you proceed to the other troubleshooting options below as this error could occur for a simple reason as the wireless capability is turned off from your PC either on some built-in settings or physically. This is why you need to make sure that Wireless is enabled. And if it turns out that it is disabled, you need to turn it back on and then reconnect to the wireless network again. You should now be able to connect to the internet without any issue.

Option 2 – Try to check the WLAN AutoConfig Service

The WLAN AutoConfig service is the one that provides the logic and functionality required to discover, connect and configure wireless networks with your PC. Aside from that, it also contains the module that allows your PC to be discoverable to other systems on a network. Thus, you need to verify if the WLAN AutoConfig service is on or not.

• Tap the Win + R keys to open the Run dialog box.
• And in the field, type in “services.msc” and hit Enter to open Services.
• After opening the Services window, look for the entry named “WLAN AutoConfig” and then right-click on it and select Properties from the context menu.
• Next, click on the Start button to turn on the service and then set the startup type as “Automatic”.
• Then try to connect to your Wireless network again and check if the issue has been resolved.

Option 3 – Try to reset the Network Configurations

Resetting the Network Configurations can also help you in fixing the Windows Wireless service as the network settings often get disrupted or corrupted in a variety of different cases every now and then. Note that this module will reset all the network settings stored on your computer.

• Tap the Win + S keys to open Search and then type in “command prompt” in the field.
• From the search results that appear, right-click on Command Prompt and select the “Run as administrator” option.
• After opening Command Prompt, copy and paste the following command and hit Enter to execute it:

netsh winsock reset

• The command given will reset the Winsock data. Once it is executed, restart your PC for the changes to take effect and then check if the internet connection is now fine.

Note: Do make sure that the WiFi drivers are up to date. To do that, follow these steps:

• Tap the Win + R keys to launch Run.
• Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. If you see a red or yellow sign that shows up against the driver, right-click on the driver’s name and select “Update Driver Software” or “Uninstall”. And if you find any “Unknown device”, you need to update it as well.
• Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
• Restart your PC.

Note: You also have the option to go directly to the website of your graphics card manufacturer and check if there’s a new update – if there is, download it.

Option 4 – Perform System Restore

Recently, a lot of issues have resurfaced after users installed the latest Windows update. So the wireless service issue might also be related to it. To fix the problem, you can perform System Restore to roll back your Windows to the last time when it was working just fine. It automatically creates backups in time whenever you install a new update or periodically. Follow the steps below to perform System Restore.

• Tap the Win + S keys to open Search and then type in “restore” in the field and select the topmost result.
• Once you’ve opened the restore settings, click on System Restore located at the beginning of the window under the System Protection tab.
• After that, a wizard will appear that will guide you through all the steps needed to restore the system. You can choose either the recommended restore point or a different one.
• After you select the restore point, click Next to proceed to the next on-screen instructions.
• Then select the restore point where the Windows Update was installed on your computer. If you have more than one restore point, you can just select the latest restore point and check the functionality from there. If it doesn’t work, you can just try another restore point.
• Another prompt will appear and will ask you to confirm your actions. Click OK and wait for the system to be restored. Once it’s done, check if the problem’s now fixed.

Installing programs on your Windows 10 computer does not go smoothly as you could encounter some issues along the way that could prevent you from successfully installing the program. One of the common errors you can encounter during the installation of programs is Error 2753. There are times when the packages are corrupted or those packages are not working properly or it wasn’t able to create files and paths. When you encounter this kind of error, you will get the following error message:

“Error 2753, The File is not marked for installation.”

Note that this kind of error is not bound to only some specific files but it can also happen with any file, be it an executable file or an MSI file. To fix this error, here are some possible solutions that you could try.

Option 1 – Fresh download the setup file

The first thing you can do is to fresh download the setup file from the official homepage and then place it in a different location. Just make sure that you download the correct setup file that’s compatible with your operating system. Then restart your computer and sign in as administrator. After that, right-click on the setup file and select the Run as administrator to proceed with the installation.

Option 2 – Try removing all the previous versions of the software

If there is a previous version of the program that’s still installed on your computer, you need to uninstall that program since it might be the reason why you’re getting Error 2753.

• Tap the Win + R keys to open the Run dialog box
• Then type “appwiz.cpl” in the field and hit Enter to open the Programs and Features in Control Panel.
• From there, look for the previous version of the program you are trying to install, select it and then click on Uninstall to remove it.
• After that, restart your computer and try to install the latest version of the program again. It should work now. If not, proceed to the next available option below.

Option 3 – Run the setup file as administrator

The setup file may need more permission in order to execute properly and so you need to run it as an administrator. To do so, you need to give it more privileges for it to work as intended by its developer.

• Right-click on the setup file and select the Run as administrator option.
• Afterward, a User Account Control or UAC prompt will appear and from there, click on Yes and then check if the file runs or not.

Note: If the setup file does not run, you may have to take ownership of the folder where the setup file is located. To take ownership of the folder, refer to these steps:

• First, locate the concerned folder and right-click on it then select Properties.
• Next, click on the Edit button in the Properties window and click OK to confirm if you got a User Account Control elevation request.
• After that, select user/group from the permission windows or click on the Add button to add another user or group. It would be best if you add “Everyone” to give permission.
• Then check “Full Control” under the “Allow” column to assign full access rights control permissions.
• Now edit the permission to Full Control for “Everyone”.
• Click OK to save the changes made and then exit.

Option 4 – Try running the setup file in Compatibility Mode

You may be getting Error 2753 if the setup file is not intended to run on the Windows 10 version you are using which is why you have to run it in Compatibility Mode. This will allow the setup file to think that it is running in a compatible environment as it is intended to.

Option 5 – Try to re-register the vbscript.dll file

You may have to re-register the vbscript.dll file using the regsvr32.exe before you can successfully install the program and fix Error 2753. The Regsvr32 tool is a command-line utility that can be used to register and un-register the OLE controls like DLL and ActiveX (OCX) control in the Windows operating system. Follow the steps below to use it.

• Open Command Prompt as admin from the WinX menu.
• Next, type exe vbscript.dll in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
• You should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.

Error Code 0xc0000142, What is it?

Error code 0xc0000142 is an error code that affects Windows 10 users. It often occurs when users attempt to run Windows applications. The message in the application error box allows users to recognize the error as it states that “the application was unable to start correctly (0xc0000142).” Common symptoms of this error code include the following:

• Inability to start applications
• Inability to completely run Windows applications
• The appearance of error code 0xc0000142 message box

Error Causes

Error code 0xc0000142 in Windows 10 is often caused by issues related to startup programs, corrupted files or other applications. To address this issue, the source of the issue needs to be located. But how will users be able to do this while the error code is present?

Further Information and Manual Repair

To fix error code 0xc0000142 users will need to employ at least one manual repair procedure. This may include checking your system for corrupt files through tools like Microsoft’s System File Checker (SFC). If you are uncertain of your skills or prefer to get professional support, contact a Windows repair technician to assist you.

The top three methods to resolve error code 0xc0000142 include the following:

Method One: Perform a Clean Boot

A clean boot is one of the most basic procedures you can run to solve a Windows-based error code of this nature. It works by identifying whether or not conflict among startup programs is preventing Windows applications from running properly. This occurs through a clean boot process involving Windows using a minimal set of drivers and startup programs when you reboot.

Here is what you’ll need to do:

• Step one: Go to Start and type msconfig
• Step two: Right-click and select System Configuration
• Step three: Select Service tab and click Hide all Microsoft Services then click Disable all.
• Step four: Click Startup tab within the System Configuration dialog box.
• Step five: Select Open Task Manager
• Step six: Within the Startup tab of Task Manager, select Disable for each Startup item, then close Task Manager.
• Step seven: Click OK on the Startup tab of System Configuration.
• Step eight: Restart your computer.

This method resolves software conflict arising when you attempt to update, run a program or simply use your operating system. However, if error code 0xc0000142 remains unresolved after you restart your machine, follow the next step below.

Method Two: Run a System File Checker Scan

System File Checker (SFC) is a utility tool built into the Windows 10 operating system, as well as other versions of Windows, to detect and repair corrupted system files. Since corrupted system files can result in error code 0xc0000142, run this tool by following the steps below:

• Step one: Go to Start and type Command Prompt or CMD.
• Step two: Right-click and select Administrator
• Step three: Check for and repair corrupted system files. Simply type sfc /scannow. (Be sure to place a space between “sfc” and “/scannow”).

Once these procedures are followed, the System File Checker tool will automatically scan your machine, and find and repair corrupted files. If this is the source or underlying cause of error code 0xc0000142 on your system, the error code will be resolved. However, if the source of the issue is not due to corruption in our system or is simply a more complicated issue try the next method highlighted below.

Krita Desktop is a free and open-source painting application. Krita is a full-featured free digital painting studio for artists who want to create professional work from start to end. Krita is used by comic book artists, illustrators, concept artists, matte and texture painters, and in the digital VFX industry. Krita has been in development for over 10 years and has had an explosion in growth recently. It offers many common and innovative features to help the amateur and professional alike. Krita has a user-friendly interface. The dockers and panels can be moved and customized for your specific workflow. Once you have your setup, you can save it as your own workspace. You can also create your own shortcuts for commonly used tools. In addition to painting, Krita comes with vector, filter, group, and file layers. Combine, order, and flatten layers to help your artwork stay organized. There are also three different views on how to see the layers. Krita supports full color management through LCMS for ICC and OpenColor IO for EXR, allowing you to incorporate Krita into your existing color management pipeline. Open PSD files that even Photoshop cannot open. Load and save to PSD when you need to take your artwork across different programs. Krita is the only dedicated painting application that lets you open, save, edit and author HDR and scene-referred images. Furthermore, with OCIO and OpenEXR support, you can manipulate the view to examine HDR images, and use it in the most cutting-edge workflows from the film and visual effects industries.

Error Code 0xc004fc03 – What is it?

Error code 0xc004fc03 occurs when Windows users fail to activate their Windows operating system due to a networking problem. The error code’s common symptoms include the following:

• Inability to activate Windows 10 operating system
• Message box with error code 0xc004fc03

Solution

Error Causes

Error code 0xc004fc03 in Windows 10 usually occurs due to issues related to a Windows user’s network. Your computer may be having problems connecting to the Internet or your firewall may be blocking or interrupting your device’s ability to activate Windows 10. In some cases, users may simply need to wait a day or two to reattempt to activate their system using a valid product key, as there may be an issue with the Windows activation servers.  Failure to promptly fix this error code might result in other Windows 10 error messages, such as error code 0xc004f034.

Further Information and Manual Repair

To rectify the error code, Windows 10 users will need to perform manual repair procedures that fix the underlying problems causing error code 0xc004fc03. These procedures may include reconnecting to one’s network, checking your firewall settings, or activating your Windows operating system via phone. The manual repair methods are simple and do not require technical knowledge of the Windows operating system. If your attempts at manually repairing this error code fail, however, you may need to try a few other procedures.

Method One: Verify Internet Connection

To check your Internet connection, you’ll need to access the Network & Internet tab in Windows 10. Follow the instructions below to access this tab and fix Internet connectivity issues if they are preventing you from activating Windows on your machine.

• Step one: Click the Start button and select Settings
• Step two: Select Network & Internet
• Step three: Click the Status section of the Network & Internet tab

If your status shows that you are not connected to a network, you will need to fix your connection. Simply use the Network Troubleshooter to troubleshoot your connection. You will be able to activate your copy of Windows once your connectivity issues are resolved.

If, however, the problem persists and error code 0xc004fc03 occurs during the activation process, this simply means that the existence of the error code is not due to connectivity or networking problems. In such a case, move to the next manual repair method listed below and follow the exact instructions given.

Method Two: Check Firewall Settings

Windows Firewall protects your PC from hackers, worms, and other malicious programs. However, in some cases, it may result in error codes like error code 0xc004fc03. If your firewall is interfering with the Windows 10 activation, you’ll be able to rectify the problem by simply adjusting your settings. Follow the steps below to check – and adjust if necessary – your Windows Firewall settings.

• Step one: Click search bar and type firewall
• Step two: Select Windows Firewall
• Step three: Select Turn Windows Firewall on or off

In some cases, Windows users may not be able to adjust settings within the Windows Firewall tab, as your firewall settings may be controlled by a third party antivirus software. If this is the case, open the antivirus software and turn off the firewall if the software does not prevent you from making such changes to its settings.

Note, however, that you will need to readjust the settings as soon as you activate your version of Windows 10. This is due to the fact that turning off your firewall settings permanently may lead to exposure to worms and other malicious programs.

Method Three: Activate Windows by Phone

Activation of Windows via phone is another option for individuals experiencing error code 0xc004fc03. The activate by phone option in the Update & Security tab will be available once you fail to activate Windows 10. To complete this manual repair method, follow the steps below.

• Step one: Select Settings
• Step two: Click Update & security
• Step three: Select Activate by phone
• Step four: Follow the instructions provided thereafter.

This is one of the most effective ways to fix error code 0xc004fc03. If the issue persists, however, you can proceed to the last resort.

Method Four: Download an Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 8 and other related issues when they do arise, download and install a powerful automated tool.

Blue Screen of Death errors or Stop errors are indications that something’s wrong with your computer. So when you encounter one, you must find out what the root cause of the problem is before it gets out of hand. One of the BSOD errors you might encounter on your Windows 10 computer is the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” error. As you know, system files or .sys files are some of the essential parts of the Windows operating system. It is a repository of system driver settings used by the Windows operating system in order to communicate with the connected hardware and devices. They are essential for the normal functioning of the operating system. A lot of Windows 10 users are facing this particular Blue Screen of Death error whenever they open an app or disconnect external devices from the system. The Netwtw04.sys file is a part of the Intel PROSet/Wireless Wi-Fi software. And so when you might encounter two kinds of Stop errors for the Netwtw04.sys driver file such as:

1. “DRIVER_IRQL_NOT_LESS_OR_EQUAL What failed: Netwtw04.sys.” – This kind of error message signifies that a kernel-mode driver tried to access pageable memory at a process IRQL that was too high.
2. “SYSTEM_THREAD_EXCEPTION_NOT_HANDLED What failed: Netwtw04.sys” – This error message indicates that the root cause of the error might be incompatible drivers with the operating system. In general, the root cause of the Netwtw04.sys BSOD error might be due to several reasons such as corrupted files, incorrect device driver configuration, malicious programs, outdated drivers, bad drivers, corrupted Windows Registry as well as some damaged or corrupted system files.

Whichever of the two error messages you got, you can try the troubleshooting options given below to fix the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” BSOD error.

Option 1 – Try to rollback your Network driver

If you have updated the driver software as of late and you suddenly got this BSOD error, you might have to roll back the device driver – in other words, switch back to the previous working version. To do that, follow these steps:

• Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
• Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
• Next, select the driver entries that are labeled appropriately other than anything in the context of the WAN Miniport.
• Then select each one of them and double-click to open a new mini window.
• After that, make sure that you’re on the Driver tab and if you are not, just navigate to it then click the Roll Back Driver button to switch back to the previous version of your Network adapters.
• Now restart your computer to successfully apply the changes made.

Option 2 – Try to update the Network drivers

If the present Network driver is giving you a headache that is the “DRIVER IRQL NOT LESS OR EQUAL or SYSTEM THREAD EXCEPTION NOT HANDLED, Netwtw04.sys failed” BSOD error, then you need to update the Network drivers. To do so, here’s what you have to do:

• Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
• Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
• Then right-click on each one of the Network drivers and update them all.
• Restart your PC and see if it helped in fixing the BSOD error.

Note: If updating the network drivers didn’t help in fixing the problem, you can also try to uninstall the very same drivers and restart your Windows 10 PC. After that, the system itself will reinstall the drivers you just uninstalled. Alternatively, you can also download and install the drivers from the manufacturer’s website directly.

Option 3 – Try running the System File Checker Scan

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the Netwtw04.sys failed BSOD error. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Run the DISM Tool

The DISM tool is another command-line tool in the Windows operating system that could help users fix various corrupted system files. To use it, follow these steps:

• Open the Command Prompt as admin.
• Then type in this command: DISM /Online /Cleanup-Image /RestoreHealth
• The DISM command you entered will repair the corrupted system image. Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 5 – Run the CHKDSK Utility

Running the CHKDSK utility might also help you resolve the Netwtw04.sys failed BSOD error. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the CHKDSK utility comes in. The CHKDSK utility repairs hard drive errors that might be causing the problem.

• Open Command Prompt with admin privileges.
• After opening Command Prompt, execute the following command and hit Enter:

chkdsk /f /r

• Wait for the process to be completed and then restart your computer.

There are times when you might notice that the Drive letter from the File Explorer is missing, right after you install an update in your Windows 10 computer. So if you are facing this issue right now, then you’ve come to the right place as this post will guide you on what to do to fix it. In case you don’t know, a drive letter represents a single alphabetic character which is through A-Z typically. This could be assigned to a physical disk partition, floppy disk drive or the removal device/ CD-ROM/ mapping network drive in your PC. In most cases, the drive letter “C:” is assigned to the first disk partition where the running Windows is installed. Thus, if the assigned letter is missing from either the Disk Management or the Windows File Explorer, it could result in inconveniences or will leave the partition inaccessible. To fix this problem, you can try to show the missing drive letters manually or make sure that the drive has a drive letter assigned in the Disk Management as well as assign the letter using a tweak in the Windows Registry. For more details, refer to the options provided below.

Option 1 – Try to show the missing drive letters manually

• Open the Folder Options from the Start Search and go to the View tab,
• Next, scroll down on the list of given options until you see the “Show drive letters” option and then check the box that’s marked against this option.
• After that, click on the Apply and OK buttons and then go back to the “This PC” window. You should now see the drive letters

Option 2 – Make sure that the drive has a drive letter assigned in Disk Management

As you know, every drive is assigned a drive letter in Disk Management. However, if it goes missing, you can still get it back through Disk Management. To do so, follow the steps below.

• Open Disk Management and from there, right-click on the menu of a partition or volume and you should see a function named “Change Drive Letter and Paths”.

Note: This function allows you to add the drive letter, remove the drive letter and change the drive letter. If the last option, namely, “Remove”, is selected and applied, the letter of the drive will be removed and won’t appear in Disk Management. Thus, this could be one of the reasons why a drive letter is missing.

• You need to click on “Add” to assign a letter to the selected drive in order to reverse the change. Note that you must assign the drive with the original letter because if not, the programs that rely on the original letter might not work as expected.
• If the original letter is already taken by a new drive, you need to change the letter of that new drive to another available letter.
• Then allocate the released letter of the targeted drive.

Option 3 – Try assigning the letter using a Registry tweak

The next thing you can do to fix the problem is to assign the letter using a tweak in the Windows Registry but before you do that, make sure that you create a System Restore point first, after that, follow these steps:

• Tap the Win + R keys to open Run and type “Regedit” in the field and then tap Enter to open the Registry Editor.
• Next, navigate to this registry path: HKEY_LOCAL_MACHINESYSTEMMountedDevices
• From there, check if a device is shown as being mounted at the specific drive letter and then right-click on that drive letter.
• Select the “Rename” option from the right-click menu to change the letter to any other available letter.
• Exit the Registry Editor and restart your computer.

Option 4 – Try to format the destination drive

Formatting the drive can also help you resolve the error. To format it, follow these steps:

• To get started formatting your drive, tap the Win + E keys and then go to the access page of the drive.
• Next, right-click on the drive and select Format.
• After that, uncheck the “Quick Format” option and then format your drive properly.
• Now once the formatting process is finished, unplug the drive and plug it back in afterward.
• Check if the error is already fixed. If the drive is not initialized, tap the Win + R keys and hit Enter.
• After opening the Run dialog box, type “diskmgmt.msc” and hit Enter to open Disk Management.
• From there, right-click on the drive volume and select initialize disk.
• Next, select the correct partition type and proceed.

OEM Partition, also known as System Reserved Partition, is placed by the OEM to help users recover their computers or bring back the original state of the computer when it was bought. If you’ve observed that a part of your hard drive says “Healthy (OEM partition)” in the Disk Management and it occupies space in GBs, then this means that it’s normal and there’s nothing to worry about except that part of the storage space is not available and even when you right-click on it, the only thing it displays is the Help menu. Thus, in this guide, you will be guided on how you can merge as well as delete an OEM partition in your Windows 10 computer. Since the Disk Management tool in Windows won’t let you merge or delete the OEM partition, you can just use the built-in command-line tool known as Diskpart. Note that you have to be extra careful when you run the commands as it could mess your computer up and before you proceed with the instructions provided below, make sure that you create a System Restore point first. Once you have that covered, follow the instructions below. Step 1: Tap the Win + R keys to open the Run dialog box and type “cmd” in the field and tap Enter to open the Command Prompt. Step 2: Next, execute this command to launch the Diskpart tool: diskpart Step 3: Execute this second command to view the list of the disks in your computer: list disk Step 4: Now select the disk you want to manage by executing this command: select disk x Note: In the command above, replace “x” with the letter of your disk. Step 5: After that, execute this command to display all the volumes or partitions: list partition Step 6: Now execute this command to select the partition you want to delete: select partition x Note: You have to replace “x” with the partition you want to delete. Step 7: Once done, execute this command to delete the selected partition: delete partition override Step 8: Afterwards, execute this command to merge the OEM partition with the adjoining value: Extend Note: if you only want to merge part of the partition, you need to use this command “extend [size=<size>]”. For instance, you want to extend its size by 5GB, then you need to type “Extend size=5000”. The size you set is the size you select from the OEM partition. This will extend the selected volume by size in MB or megabytes.