How to Repair BSOD Stop Error code 0xc000021a in Windows 10

What is the error code 0x800ccc90?

The 0x800ccc90 is a common Outlook Express error. This error occurs when Outlook Express fails to connect to the mail server that handles incoming and outgoing emails.

The error is usually displayed as:

“There was a problem logging onto your mail server. Your User Name was rejected.”

Though this error does not pose any security threats to your PC if it is not fixed immediately, it may limit your ability to send and receive emails on your Outlook email address.

Error Causes

The error 0x800ccc90 is usually triggered by the following causes:

1. Authentication problem- This happens when your account details are not authenticated by the server. In this case, you will see a pop up message displaying ‘Server:’pop3.example.com’, or ‘Secure (SSL): No, Server Error: 0x800ccc90’.
2. Failure of POP3 server

Further Information and Manual Repair

If you come across the error 0x800ccc90, then don’t you worry! You don’t have to hire a professional to resolve this issue. In fact, you can fix it all by yourself. Here are some DIY solutions to repair this problem.

Solution 1:

• Go to the ‘Tools’ tab and select ‘Accounts’
• As you click on the accounts tab, an internet accounts box will appear on the screen
• Now double click on the account property box.
• After that go to the server tab and click it.
• Now check on the box that says ‘My Server Requires Authentication.’
• Once you check on this option now click on apply to accept changes and then close the window.
• To bring the changes into effect, restart Outlook and then try to send emails again. Hopefully, this will work.

Solution 2:

However, if you are still unable to resolve the problem, then this means the PST files are corrupt and damaged and there is no problem from the server's end. When this happens, then the best way to resolve this problem is to download a PST repair tool.

We suggest downloading the PST repair tool from a trusted website.

After downloading it, run and scan it on your PC to detect errors. You will have to be patient because scanning may take a couple of minutes. Once the scanning is complete, click on repair to resolve the problem.

So, next time when you are unable to send or receive emails on your Outlook Express and you see the 0x800ccc90 error message, then try using the solutions given above to resolve the error right away.

Black Screen During Installation - What Is It?

Many are upgrading their OS to Windows 10, however, it’s not always smooth sailing because users have been reportedly experiencing different bugs including Black Screen after a successful update.

One common issue in installing Windows 10 is the appearance of a black screen after installation. This usually occurs when the user restarts the computer. Initially, there will be a black screen only appearing on the monitor. There are also cases where a mouse cursor is present, while some cases have no cursor at all.

Not only that, it seemed that you’ve lost all your desktop icons when experiencing this bug.

Solution

Error Causes

Just like the other bugs experienced by Windows 10 users, booting to a black screen has reasons. Before you even try to look for the solution, you first have to determine the cause of the error, in this case, the error would be black screen when booting.

• Error on external devices such as printer or mouse.
• Having outdated display/video drivers that normally result in black screen when OS is updated.

If error messages are left unsolved, you may encounter other Windows 10 related issues such as error code 0xc0000142. 

Further Information and Manual Repair

Before you even think of upgrading your OS to Windows 10, you need to know that there are specific system requirements and specifications to be able to successfully update your operating system.

• Minimum of 1 gigahertz (GHz) Processor
• Either 1 (GB) (32-bit) or 2 GB (64-bit) Ram
• You need at least 16 GB of free hard disk space
• A Microsoft DirectX 9 graphics device or later with WDDM 1.0 driver graphics card
• 800 x 600 display
• A Microsoft account and Internet access.

There are more system requirements in order to use other certain Windows 10 features, but we’ll focus on solving your black screen problem in this article.

IMPORTANT NOTE: While it’s possible that you’ll be able to find the solution for your black screen during Windows 10 update, contacting the service of a professional technician or using an automated tool is advisable if you’re not confident in performing the methods to be discussed.

Method 1: Windows 10 DVD Boot

1. Hit Repair your computer at the Install Now screen.
2. Press Advanced Options
3. When you’re in the Advanced Options find Troubleshoot and click it.
4. Proceed to pressing Startup Repair
5. Simply follow the instructions of the screen and check if that helps solve the black screen problem.

Method 2: Safe Mode from Windows 10 DVD Boot

1. Go to Install Now screen
2. Hit Repair your computer button
3. Go to Advanced Options
4. Click Safe Mode option

There’s a chance that you’ll get an error prompt saying, “installation cannot be completed in safe mode.” If this happens, simply press Shift + F10. This command will redirect you to the Command Prompt. You just open Device Manager by keying in devmgmt.msc then disable the display adapters, now check if you’ll be able to successfully boot in normal mode.

This process will normally allow you to complete the Windows 10 installation, if that’s the case you can just update the display adapter drivers from the manufacturer’s website. Restart your computer and see if this solves the problem.

Method 3: Driver Roll Back

1. Hit Windows Key + X then press the Device Manager
2. Expand the Display Adapters option
3. Right-click the listed Display Adapter and press on properties
4. Find the Driver Tab and click on it, then press Roll Back Driver

Do take note, however, that the Roll Back Driver option is not available if there was no previous version installed.

Method 4: Check External Devices

Since one common cause of black screen during a Windows 10 update is the external devices you use in your computer, you might want to consider these steps as well.

1. Simply unplug all of the external devices you currently use
2. Restart your computer
3. If in case this solved your black screen problem, carefully plug back the devices one at a time to determine which of the device is the culprit.
4. Update the drivers for the outdated hardware using a reliable third party tool.

Method 5: Fast Startup Disabled

Some Windows 10 users had success in solving their black screen problem by disabling the fast startup.

1. Go to the Control Panel, find Power Options and press “Choose what the power button does,” which is located in the left pane of the panel.
2. Hit the “Change settings that are currently unavailable.”
3. Make sure to unmark the checkbox button saying, “Turn on fast startup.”

Error Code 0x80073afc - What is it?

Error code 0x80073afc deals with an antivirus program first built into Windows 8/8.1 This error occurs when Windows Defender, the built-in anti-virus software in Windows 8/8.1 and higher, does not start automatically and users attempt to manually start the program. During the initialization period of the program start-up, something goes wrong and users get a 0x80073afc Error message. The error message states there was a problem with the initialization of the program. Windows Defender provides protection of your computer and it is advised by the Microsoft Corporation that you ensure it starts up automatically on every start-up.

Solution

Further Information and Manual Repair

Users have found several manual repairs that have fixed the problem without needing to contact technicians for extra help. While the methods below should solve your problem easily, if this is the first time you have encountered the issue you may want to do a simple restart. This has fixed the problem for some users and is the easiest first troubleshooting move. If it doesn’t work move on to the methods listed below, which are easily completed without extra help.

Before trying any of these methods, please make sure that you are logged into a profile that is listed as the administrator of the computer of his administrative powers enabled. If this is not the case you will not be able to complete the following methods. Please log out and log back in on the administrator profile.

Method 1:

First, check to see if you have a third-party anti-virus program installed on your computer. Some users believe that the built-in Windows Defender program is not powerful enough to handle the safety of their computer so they usually download a third-party program. However, that program may have caused a conflict with Windows Defender and may not allow it to open. If you do have a third-party program installed, try uninstalling it then manually starting Windows Defender.

Method 2:

If method one does not work, you may be infected by malware or a virus that has tampered with the settings on your computer and will not allow Windows Defender to start automatically or manually.

First, open Run by holding the “Win” key and pressing the “R” key. Then type “Regedit”. The program will ask for permission to follow through with this action. Click on “Yes” and the Open Registry Editor will open.

Find the HKEY_LOCAL_MACHINESoftwareMicrosoftWindows NTCurrentVersionImage File Execution Option and check to see if there are any files similar to MSASCui.exe or MpCmdRun.exe. If there are any file entries that resemble that, you will want to right-click on them before selecting the “Delete” option. If you do not see any entries that match, this is not the issue with your Windows Defender and you will want to try another method.

The Registry on your computer is very important. It helps tell your computer what programs are safe to run, what programs should be run, and what programs should not be run. If it is tampered with by a virus or Malware, multiple system operations can be affected.

However, if you did find similar file names, and you deleted them, try to start Windows Defender manually. If it does not work again, move on to the next method. 

Method 3:

If the first two methods do not work for your issue, and you are still receiving error code 0x80073afc when attempting to start Windows Defender, this step should solve the problem if you have Restore Point installed on your computer, which you most likely do.

For this method, we will be restoring your computer to a previous Restore Point. First, just like in method two, hold the “Win” key and press the “R” key. This will open run. Next type “Rstrui.exe” and click “ok”. After some time, you will see System Restore Windows. Click “Next” and select the restore point that you would like to go back to. After your computer has restored to the point you selected, check to ensure that Windows Defender has started correctly.

If the above methods aren't able to rectify the issue, you might have to download and install a powerful automated tool to get the job done.

One of the selling points of Windows 11 was the ability to run Android apps natively in it without the need for any third-party software. It is not a big surprise that even after its release Microsoft is evolving and expanding Windows 11 and its features.

Microsoft is now rolling out an update for the Windows Subsystem for Android on the Dev Channel of the Windows Insiders program. The new version upgrades the core operating system from Android 11 to Android 12.1 (also known as Android 12L), which means the new system and app features in Android 12 and 12.1 are now available on Windows for the first time. However, not the new features in those updates apply to the modified version that runs on top of Windows. For example, one of the main improvements in 12.1 was a dual-pane notification panel for larger screens, but Android app notifications on Windows just show up in the Windows notification panel.

The upgrade also improves how Android apps integrate into Windows. The Windows taskbar will now show which Android apps are currently using the microphone, location, and other system services — similar to many native Windows applications. Toasts messages (the small popups that some apps use for temporary messages) are now displayed as Windows notifications, and the titlebar on Android apps will use the current activity name for the title.

Full changelog

• Windows Subsystem for Android updated to Android 12.1
• Advanced networking on by default for newer x64 Windows builds
• Updated Windows Subsystem for Android Settings app: redesigned UX and diagnostics data viewer added
• Simpleperf CPU profiler recording now works with Windows Subsystem for Android
• Windows taskbar now shows which Android apps are using microphone and location
• Improvements to Android app notifications appearing as Windows notifications
• Reduced flicker when apps are restored from minimized state
• Apps are not restarted when devices come out of connected standby on recent Windows builds
• New video hardware decoding (VP8 and VP9)
• Fixes for on-screen keyboard in apps
• Fixes for full-screen Android apps and auto-hidden Windows taskbar
• Windows Subsystem for Android updated with Chromium WebView 100
• Added support for Android NetworkLocationProvider in addition to GpsLocationProvider
• Improved general stability, performance, and reliability

The new update is limited to Windows Insiders for now, but once Microsoft fixes all the bugs, it should start rolling out to everyone on Windows 11 that has the Android Subsystem enabled.

Both the Windows 10 and Windows Server operating systems have a number of common system files that vary from the ones that support the installation, boot process, and other operations or tasks in the system. However, if any of these files get corrupted, it might cause some errors during the setup of the Windows 10 operating system. One of these errors is the “Windows cannot find the Microsoft Software License Terms” error.

“Windows cannot find the Microsoft Software License Terms. Make sure the installation sources are valid and restart the installation.”

The only option given when you encounter this error is to click on the OK button and nothing else and then the setup gets interrupted and won’t push through. To fix this error and proceed with the installation, you can try to get a new installation image or switch ports, or fix the CFG file. For more details, follow each one of the potential fixes provided below.

Option 1 – Try to get a new installation image

It is possible that there might be some issues with the installation image. It could be corrupted or was modified illegally. Or it could be that the bootable storage device created might have damaged sectors or installation. To resolve this problem, you need to download a fresh copy of the Windows 10 installation image using the Windows Media Creation tool or simply use the ISO image separately and then build a bootable USB.

Option 2 – Try to switch Ports

The error might be caused by the connection to the USB port. It could be that the port is unstable due to a number of factors that resulted in the interruption of the installation process. To fix this problem, you can try switching the USB port or if you are using an optical drive, you can get an external USB optical drive or connect it to another port internally and see if it fixes the problem.

Option 3 – Try to fix the CFG file

If none of the first two options worked, then you might want to fix the CFG file. This file is a configuration file format used for storing settings. All you have to do is download the CFG file. Once you’ve downloaded this file, copy this file to the root of your bootable drive and then check if it fixes the error. If not, then try to copy the same file inside the “/sources/” folder inside the root of the drive. This should fix the error.

Error Code 0x800705b4 - What is it?

Error Code 0x800705b4 is an error that will appear when the computer is not stable, and very critical system files will fail to respond or they will start going missing. This will happen when the computer is not being maintained properly. The problem should be solved immediately to avoid any further damage or loss of data. This error code may be regarded as one of the most severe computer problems that can present itself.

Common symptoms include:

• There will be a failure to install updates and a display of the error message.
• The Error Code 0x800705b4 will display itself.
• After a system update, the computer will not be able to install new drivers.

Solution

Error Causes

Windows 10 update error 0x800705b4 can be caused when the user wants to update their windows system when important dll registries or files are missing or are corrupt. This will also happen when the user is trying to install or uninstall programs in a way that is wrong, or it may be infected with a Trojan virus. Additionally, this error code will be displayed when a PC's drivers are either outdated or installed the wrong way. There could be a registry error, a failure to update by the operating system, or even a device failure to update automatically.

Further Information and Manual Repair

There are several ways to resolve the appearance of error code 0x800705b4 on Windows devices. If you are not familiar with fixing error codes on a computer or are having trouble fixing this one, consider contacting a Windows technician to help with fixing the error. The computer must be run on administrator mode no matter which steps you are taking or which methods you are using. Depending on which version of Windows you are using, the steps for each method may differ slightly, but the basic process will remain the same.

Method One: Fixing it with updates

Start the computer in safe mode to begin troubleshooting for error code 0x800705b4. When the computer is starting up, press F8—this will enter the computer into safe mode.

You will now need to manually update your computer's outdated drivers. To do this, click on Start. Then, type in Device Manager into the search box to see if there are any outdated or corrupt issues with the drivers.

Method Two: Run an SFC scan

This will allow users to find files in Windows that are corrupt, damaged, or lost.

• Start the Command Prompt. To do this, click Start and then type in cmd inside of the search box to see the icon.  Right-click and choose to Run as administrator. If asked, enter the password for the administrator.
• When viewing the command prompt, type in “sfc/scannnow” and then press enter. This will be scanning all of the protected system files and will fix the corrupt files. Do not close the command prompt before it is done.

Method Three: System Restore

This is the most efficient way to fix any problem or system status. System backup is vital when performing this.

Click on the Start button, and then type in “system restore” inside of the search box. Right click on System Restore, and then choose Run as Administrator. This could also be found in the Control Panel. Now you will choose the time point in which to restore the system. You will be able to choose the recommended or specific restore based on the situation. Now you can review the restore point and then click Finish.

Method Four: For Windows 10

• You may need to update the Windows Defender in the security center. To locate this, click Start, Settings, Update and Security, Windows Defender.
• Go to the Windows Updates and click on Advanced Options. Click on the option that will get updates for more Microsoft products.
• Restart the computer, and then check for updates again. This update process will be able to be done without a problem. When a message comes up that says “Your device is up to date” you will need to click Advanced Options once again and check for update options.
• Check for updates one more time and now the proper updates should be able to be downloaded and installed properly.

Method Five: Use An Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

DLL files, also known as Dynamic Link Libraries are external parts of applications that run on Windows as well as other operating systems. Almost all applications are not complete in themselves and store code in different files. In this post, we will be discussing one DLL file called ntdll.dll. It is described as “NT Layer DLL” which means that it contains some Kernel functions that help in the normal functioning of the Windows operating system. It is created by Windows in the System32 folder when the OS gets installed. This file can serve different programs simultaneously by providing them with different Kernel functions which support the programs’ performance. However, if you encounter the ntdll.dll file error on your Windows 10 computer, read on as this post will guide you in fixing the problem.

Option 1 – Try to re-register the ntdll.dll file

You may have to re-register the ntdll.dll file using the regsvr32.exe before you can successfully install the program and fix ntdll.dll file crash error. 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 the following commands 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.
  • exe /u ntdll.dll
  • exe ntdll.dll
• 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.

Option 2 – Disable problematic Internet Explorer add-ons

There are instances when some add-ons in the Internet Explorer browser can cause the ntdll.dll file crash error. Thus, you need to disable some add-ons in Internet Explorer and then check if it fixes the problem.

Option 3 – Try running the DISM tool

You might want to repair potentially corrupted files in your system as having them could also trigger the ntdll.dll file crash error. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the DCOM error is now fixed.

Option 4 – Try to run the Program Compatibility Troubleshooter

You might also want to run the Program Compatibility Troubleshooter. This built-in troubleshooter is available in the Windows Update & Security section. From there, select Troubleshoot. This will find a list of programs for you and since you have already downloaded the driver files, just click on Not Listed located at the top of the program list. After that, browse and select the driver files and then let the program do its job.

Option 5 – Try to replace the DLL file with a trusted source

• First, you need to get the new DLL file from another computer with preferably the same file version number.
• After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
  • x86: This PC > C:WindowsSystem32
  • x64: This PC > C:WindowsSysWOW64
• Next, type “cmd” in the Cortana search box and right-click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
• Now type the “regsvr32 ntdll.dll” command and hit Enter.
• Restart your PC and check if the error is now fixed.

Option 6 – Try scanning your computer using Windows Defender

The ntdll.dll file crash error might also be infected with malware or virus and to eliminate it, you have to scan your computer using security programs like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

Running the Windows Setup does not always go smoothly as you could encounter some errors along the way. One of these errors is the “Something happened, Setup has failed to determine supported install choices” error. The only given option in such cases is to click the Close button and exit the setup. This kind of error in Windows setup can occur when you try to downgrade to the previous version of Windows using the built-in mechanism. This error could be caused by a corrupted image or it is also possible that the set of files are incomplete. Aside from that, it could also be due to compatibility issues or that the module used to downgrade the Windows operating system is not configured properly. To fix this error, you have to run the Windows Setup program in compatibility mode so that you can downgrade Windows. You could also use the image for the lower version of Windows that’s available on the official site of Microsoft. But before you do any of these, make sure that you’re logged in as an administrator. To fix the “Something happened, Setup has failed to determine supported install choices” error, follow the given options below sequentially.

Option 1 – Try to run the Installer of the downgraded version in Compatibility Mode

This is the first thing you can try to resolve the issue instead of going right ahead on making a bootable device. So if you are downgrading Windows, you can try to run the installer in the compatibility mode for that specific Windows version.

• Look for the setup file.
• Once you find it, right-click on it and select Properties from the context menu.
• After that, go to the Compatibility tab and mark the checkbox for “Run this program in compatibility mode for:” and from the drop-down list, select either Windows 7 or Windows 8.
• You also have to check the “Run as administrator” option.
• Now click the Apply button and then click OK to save the changes made and check if it has resolved the issue or not.

Option 2 – Try to troubleshoot compatibility

This option is almost the same as the first one except it is an alternative way of fixing the “Setup has failed to determine supported install choices” error in case the first one didn’t work. In this option, you will troubleshoot the compatibility issue.

• Look for the setup file.
• Then right-click on it and select the “Troubleshoot compatibility” from the context menu.
• After that, click on the “Try recommended setting” option. Once the process is done, the error message should be gone.

Option 3 – Run the DISM tool

You can run the DISM tool as well to help fix the error code 0x80244022 during Windows Update. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 4 – Try using the image from the official site of Microsoft

If none of the options given above worked, you can try to use the image from Microsoft’s official site. This would help, especially if the error is caused by a corrupted image or image folder with incomplete files.

If you receive an error message saying, “Windows Update cannot currently check for updates because updates on this computer are controlled”, while trying to change the Windows Update preferences or manually update, then read on as this post will guide you in fixing it. You can mostly encounter this error in managed systems where an Administrator controls the permission on the operating system. The reason why you are not able to modify the Windows Update preferences or manually update your system is that a group policy prevents you from doing so and that the only user who can do these things is none other than the administrator of the system. Troubleshooting this kind of problem is the same as when you troubleshoot an error message that says, “Some settings are managed by your organization”. In such cases, you need to check both the Windows Update Group Policy and Registry settings. If you’re just a standard user, you have to contact your system administrator regarding this issue and if you are the administrator, you can make adjustments to the system settings via the Registry Editor and the Group Policy Editor. Refer to the instructions given below for detailed instructions.

Option 1 – via the Registry Editor

If you are using the Home edition of Windows 10 and you want to change the policy for non-admin users on your local computer, then you can use the Registry Editor for that. Here’s how you can do it:

• Tap the Win + R keys to open the Run dialog box.
• Then type “Regedit” in the field and hit Enter to open the Registry Editor.
• After that, navigate to the following registry key:

HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows

• From there, look for the key named “WindowsUpdate” in the Windows folder and if it does not exist, you can just right-click on the Windows folder and select New > Key.
• Now name the new key “WindowsUpdate” and create a new sub-key under the newly created key and input “AU” as its name.
• Keep AU selected and then right-click anywhere in the right pane and select New > DWORD (32-bit) Value.
• Then name the Value as “AUOptions” and right-click on AUOptions and select Modify.
• Next, change the value of the Value data to “5” and click OK to save the changes made to the settings. Note that the Value Data of 5 refers to the policy to allow the local admin to choose the setting.
• Now restart your computer once you’re done and check if non-admin users can now modify the Windows Update settings or update Windows.

Option 2 – via Group Policy Editor

• Tap the Win + R keys to open the Run dialog box and then type “gpedit.msc” and hit Enter to open the Group Policy Editor.
• Next, navigate to this folder: Computer Configuration > Administrative Templates > Windows Components > Windows Update.
• Now look for the “Configure Automatic Updates” policy on the right pane and double click on it to open its Properties.
• After that, shift the Radio button to “Enabled” and from the drop-down menu for Configure automatic updating, select option 5: Allow local admin to choose the setting.
• Then click on Apply and OK to save the changes made to the settings.
• Restart your computer and check if the problem’s fixed or not.

This post will walk you through fixing the rtwlane.sys Blue Screen error. This kind of BSOD error belongs under the category of the “DRIVER IRQL NOT LESS OR EQUAL” Stop errors. If you encounter this kind of Stop error then it means that a kernel-mode driver tried to access pageable memory at a process IRQL that was too high. The main issue with the rtwlane.sys Blue Screen error has something to do with the Realtek PCI-E Wireless LAN PCI-E NIC driver. In other words, it has some issues with the wireless card of your computer which is built by Realtek. And since it this error concerns your wireless card, you might also experience some connectivity problems with your computer as the wireless card refuses to find any network connections and even randomly disconnects. To resolve this problem, you need to refer to the given options below.

Option 1 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like rtwlane.sys Blue Screen error. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 2 – Try to update or 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 “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.
• From the list of Network Drivers, look for “Realtek <Model> Wireless LAN 802.11n PCI-E NIC” and then right-click on it and select Update Driver.
• Restart your PC and see if it helped in fixing the BSOD error.

Note: If you see any of the following entries under the Network drivers, you might want to download their latest available versions from each one of their manufacturer’s websites.

• Realtek High-Definition (HD) Audio Driver
• Realtek Card Reader Driver
• Realtek Local Area Network (LAN) Driver

On the other hand, if updating the Network driver didn’t help, you can also try to roll back to its previous version.

• Open the Device Manager again and then look for Network Drivers.
• Next, select Realtek <Model> Wireless LAN 802.11n PCI-E NIC from the list of Network Drivers and then 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 the Realtek driver.
• Now restart your computer to successfully apply the changes made.

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 with 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.