How to Fix Windows Upgrade error 0xa0000400

Blinking or Flashing Desktop After login - What does it mean?

Upon updating to Windows 10, some users might encounter a blinking or flashing desktop after logging in. This will result in a repetitive restarting of explorer or you won’t be able to make the start menu and shortcut keys work. In addition, the network icon might not appear in your taskbar as well. Other Windows 10 error messages include error code 0xc000021a.

Solution

Error Causes

Your blinking or flashing desktop after logging in might be the result of problems with the bushell.dll shell extension, which is a part of the Norton Security Suite. Another possible cause for this annoying problem is an issue with your display driver since not all systems will use the same display driver and will depend on what graphics card you use.

Further Information and Manual Repair

In fixing the bothersome blinking or flashing desktop after logging in problem, you can do a manual repair method to address the root problem. You need to be familiar with the Windows command line to successfully go through the process. However, if you are not knowledgeable or confident enough to do this on your own, it would be best to seek help from a professional. Or, you might want to consider using an automated tool to solve the issue.

You need to identify first what’s causing the blinking or flashing of your desktop after login to properly address the issue. The following methods can be done if your issue is caused by bushell.dll shell extension issue:

Method One: Forcefully Terminate Process

1. Press on Ctrl+Alt+Del then select Task manager
2. Start a Command Prompt as an administrator by choosing the File menu then Run New Task.
3. Type exe. Make sure to tick the checkbox “Create this task with administrative privileges.”

NOTE: Text input is most probably affected by the explorer restarts so you might need to repeatedly type some letters or to carefully input texts.

4. In the Command Prompt, type taskkill /f /im explorer.exe. This will stop the blinking or flashing.
5. Type cd “Program Files” afterward, type dir /s bushell.dll to locate where the dll is. (For example, purposes, use c:\program files\Norton Security Suite\Engine6422.5.2.15 as the location)
6. If the dll file is not found, you can try repeating step 5 but this time, use “Program Files (x86)” However, you can proceed with the next step if you already located where the bushell.dll is.
7. Type cd ”c:\program files\Norton Security Suite\Engine 6422.5.2.15” to change the name of the directory you found the dll in.
8. Type ren bushell.dll bushell-crash.dll
9. Restart now the system by typing shutdown /r /f /t o in the command line.

Method Two: Uninstall Programs

1. Log out then go to the sign in screen
2. Press the Shift key as you simultaneously click on the Power button on the screen.
3. Continue pressing on the Shift key as you click
4. Continue pressing on the Shift key as you wait for the Advanced Recovery Options menu to appear.
5. Once the Advance Recovery Options menu appears, click on Troubleshoot then select Advanced options.
6. Click on the Startup Settings then select
7. Boot on Safe Mode by pressing 4 on your keyboard.
8. Log in then press Windows key + X.
9. Select the Device Manager then expand Display Adapter.
10. On your Display Adapter, right-click then select
11. Exit Device Manager
12. If in case you also have an older Antivirus utility, you should uninstall it as well.
13. Restart

NOTE: You might need to download the latest Video Driver on a working computer. Save it in a thumb drive then copy and install it on your computer. If in case there is no native Windows 10 driver, you can also download the latest Windows 7 or Windows 8.1 video driver. Afterward, install it in compatibility mode.

Method Three: Use Microsoft System Configuration Utility

1. Log out then go to the sign in screen
2. Press the Shift key as you simultaneously click on the Power button on the screen.
3. Continue pressing on the Shift key as you click
4. Continue pressing on the Shift key as you wait for the Advanced Recovery Options menu to appear.
5. Once the Advance Recovery Options menu appears, click on Troubleshoot then select Advanced options.
6. Click on the Startup Settings then select
7. Boot on Safe Mode but this time, choose 5 to start in Safe Mode with networking.
8. Check if your problem is present or not in Safe Mode. If not, then you are on the right track.
9. Press on the Windows key + R then type msconfig to start up your exe file.
10. Click on the Services tab then choose Disable All. Afterward, click on
11. Once you’re prompted to reboot your computer, go ahead and reboot in Normal Mode. Check if the issue is still present.
12. If the blinking or flashing desktop after login is gone, then you can just do a process of elimination.
13. Start-up on your exe again then begin bringing up services a few at a time.
14. You can turn on all other services except for the following which causes the blinking or flashing desktop after login problem: Problem Reports and Solutions Control Panel Support •Windows Error Reporting Service.

If you connected your Hard Disk, USB, or SD card to your Windows 10 computer and you suddenly encounter an error that says, “Windows was unable to repair the drive”, read on as this post will help you fix the problem. This kind of error indicates that the file system on the drive has become corrupted and that ChkDsk was not able to repair the problem. You can also encounter this error when you try to run the ChkDsk utility to repair the system. This kind of error is most likely due to the general corruption of the contents in the drive. It is also possible that you removed the external drive without using the “Safely remove hardware” option or it could be that the drive is still in use. To fix the problem, the obvious thing to do is to safely remove the external drive by using the “Safely remove hardware” option. If it didn’t work, you can try to run the CHKDSK utility from the command line or you could also restart your computer in a Clean Boot State and then run the scan. Before you proceed with the potential fixes provided below, make sure that you create a system restore point first or you could also create a backup copy of the data to an external drive.

Option 1 – Run the CHKDSK utility from the command line

Although some users reported getting the “Windows was unable to repair the drive” when they run a CHKDSK scan, other users reported that running it also fixed the error. Thus, you can try to run it and see if it works or not.

• In the Windows Search box, type “command prompt” and from the search results, right-click on Command Prompt and select “Run as administrator”.
• After opening Command Prompt, type this command and tap Enter: chkdsk <Partition Letter>: /f
• The command you entered will start to check for errors and fix them automatically. Else, it will throw an error message saying, “Chkdsk cannot run because the volume is in use by another process. Would you like the schedule this volume to be checked the next time the system restarts? (Y/N)”.
• Tap the Y key to schedule Disk Check the next time your computer restarts.

Option 2 – Restart your computer in a Clean Boot State

There are some instances that some conflicting programs installed in your computer might be the one that triggers the “Windows was unable to repair the drive” error to appear when you connect your external drive or run the CHKDSK utility. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• Once your computer has restarted in a Clean Boot State, perform your scan again and see if it now works, and then start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

If you recently upgraded your computer or if you’ve just switched to a new Windows 10 PC, the most common errors you might encounter are the Windows Activation errors. This issue boils down to the Windows Activation server which has either failed to validate or recognize the license tied to the digital account. In this post, you will be guided on how to fix an activation error in an organization with an error code 0x8007007B. It contains this exact error message: “We can’t activate Windows on this device as we can’t connect to your organization’s activation server. Make sure that you’re connected to your organization’s network and try again. If you continue having problems with activation, contact your organization’s support person. Error code 0x8007007B.” Various computers are activated via the KMS licensing (Key Management Server) in organizations. Computers that are activated using this process do not get a permanent activation and have to stay connected to the organization instead of for at least 7 months or 180 days. It is common in Pro and Enterprise versions that are deployed in bulk for at least hundreds or thousands of computers. So imagine a user with a personal computer in the office who decided to leave the organization but will still have an activated Windows key. And so to prevent that from happening, organizations use the KMS licensing. Another possible cause of the error is in case some user used an organization key and later on, the PC just got upgraded or downgraded to a version that is not compatible with that copy of Windows. To fix this Windows Activation error, here are some suggestions that might help.

Option 1 – You can try connecting to the organization’s network and activate the computer. But before that, you need to first check if the computer actually belongs to an organization or not.

• Tap the Win + R keys to open the Run dialog box.
• Type “cmd” and hit Enter to open an elevated Command Prompt.
• After that type the vbs /dlv command and hit Enter to execute it.
• Next, check if the Product Key Channel says “GVLK”. If it does, then it means that your computer was activated using volume licensing.

Option 2 – Change Licence Key

If you’ve recently left an organization then it’s best if you buy another copy of Windows 10 and then change the license key. This time, make sure that the license key is for the same version of Windows. However, if it’s different, you need to format your computer.

Option 3 – You can try activating Windows 10 using a mobile phone

Activating Windows 10 can also be done using your phone. Just note that you have to call Microsoft to do so.

• In the Start Search box, type in “Slui 4” and tap Enter.
• Next, select your country and click on Next.
• Keep the window open and call the toll-free number of the country you’re from.
• Afterward, a confirmation ID should be given by the automated system which you must take a note of.
• Finally, in the box on the window, type in the confirmation ID and click on the Activate button. That should do it.

Option 4 – If you think that the issue is caused by some hardware changes, you can try using the Activation Troubleshooter.

There are times when users already have the license keys and were able to activate Windows. However, it doesn’t last long and only works for a while and it’s suddenly throwing up an activation error like this one. To use the Windows Activation Troubleshooter, just go to Settings and to Activation and then run the troubleshooter from there. If you've made some modifications to your hardware, you have to click the “I changed hardware on this device recently” option for further suggestions.

As you know, the USB security keys are a secure medium to validate a lot of components in a computer. They can be used to log in to Windows 10. Now with the advancement of APIs, you can authenticate across the website as well using the same key. However, there are times when it may not work and it could be caused by several factors. It could be due to corrupted or incompatible drivers or it could also be due to compromised integrity of the key, and many more. So if you happen to encounter an issue with the USB security key on your Windows 10 computer, then there are several potential fixes you can try. You can try toggling the Internet Options settings or reinstall the respective USB drivers. You could also try changing the PIN of the security key or disable the antivirus program on your computer or troubleshoot the web browser. Refer to the potential fixes provided below to fix the problem.

Option 1 – Try to toggle the settings of the Internet Options

• In the Windows Search box, search for Internet Options to open it.
• Next, go to the Security tab and drag the security slider to the lowest possible security for all the given zones.
• After that, click on OK to save the changes made and close the Internet Options.

Note that this option is only a temporary measure as it can make your computer vulnerable. Make sure to press the Reset all zones to default level button.

Option 2 – Try to update or reinstall the respective drivers

If updating the drivers of the device did not fix the problem with the USB security key, you can try to update or reinstall the Universal Serial Bus Controller drivers instead of using the Device Manager. Refer to the following steps:

• First, click the Start button and type “device manager”.
• Then click on the “Device Manager” from the search results to open it.
• From there, look for the “Universal Serial Bus controllers” option and then right-click on each one of the USB drivers and select the Update Driver from the menu.

Note: If it is a regular USB drive, then it will be listed as a USB Mass Storage Device but if you have a USB 3.0 device, then look for a USB 3.0 Extensible Host Controller.

• Restart your PC and then click the “Search automatically for updated driver software” option.

Note: If updating the USB Controller drivers didn’t work, you can try to reinstall them instead.

Option 3 – Try to change the PIN of the security key

If the first two options didn’t work, you can try changing the PIN of the security key. There are instances when the PIN for the security key might have been corrupted. Thus, resetting it can help you resolve the problem.

Option 4 – Temporarily disable Firewall and third-party antivirus

Firewall and antivirus programs are known to block the proper functioning of the USB security key. Thus, your antivirus or firewall programs might be the reason why you can’t download anything on your Windows 10 computer. To isolate the issue, you need to temporarily disable both the Firewall and antivirus programs and then check if you can now download anything from the internet. Do not forget to enable them again as disabling them can leave your computer vulnerable to cyber threats.

Option 5 – Try to troubleshoot the web browser

Troubleshooting your web browser can also help you fix the USB security key problem. You can do that by checking if your web browser supports the security key and you can do that by checking on the official website of your browser. You can also try to update your web browser to its latest version but if it didn’t help, you can try to reinstall it or switch to another web browser.

Like in Windows 10, Windows 11 will also support God mode to be enabled and used. For those readers that do know what God mode is, let me explain it in simple terms. God mode is the icon on the desktop that once clicked will open and let you adjust every option in the control panel and some hidden features for Windows inside one application. There are a lot of advantages to having this one-click fast access to features, especially if you are a power user. Luckily creating such an awesome icon and enabling God mode is very easy to accomplish, all you have to do is:

1. Create a new folder where you want to have the God mode icon
2. Rename folder exactly: {ED7BA470-8E54-465E-825C-99712043E01C}
3. Enjoy God mode

As you can see creating and accessing all settings at your fingertips is much easier than most people think. Enjoy your ultimate access to Windows 11 features and if you wish you can drag and drop sections from it into the desktop or anywhere for easy access to that specific topic.

The Error Code 0x80070057 is rather typical with Win7. Customers of Win7 maintain reporting that each moment they strive to install this Operating system, it shows this problem error. Often, the total information that comes with this specific error is:

"Error Code 0x80070057: The parameter is wrong"

When this problem happens, you will end up struggling to move private documents from one person to another.

Solution

Error Causes

You could get the error message when you attempt installing Win7,

"An Internal Error has occurred. Incorrect parameters".

If this happens to you, realize that you are dealing with malfunction code 0x80070057. This error occurs mostly when you are trying to build a full backup of your Windows 7 OS.

The primary source of Error 0x80070057 is huge registry values.

Extensive registry values usually occur when you are trying to back up your Windows 7 OS. This means that you need to immediately create a bigger virtual memory space to avert the occurrence of the error.

Error Code 0x80070057 can be a result of incompatibility between the motherboard and some drivers.

Check whether the computer's motherboard and the installed drivers are compatible. If you can't do this effectively on your own, it might be a good idea to enlist the services of a qualified technician.

The Problem Signal 0x80070057 has a close Connection with RAID Installations

RAID installations have a tendency of sparking off the Error Code 0x80070057. If you experience this error while using RAID, first turn off the RAID setup and check whether that resolves the problem.

Further Information and Manual Repair

Error Code 0x80070057 is repairable. Thus, there's absolutely no cause for alarm when you see it with respect to your own Windows 7 Operating System. So what can you do to resolve it? a) Increase Virtual Memory: This is perhaps the most common solution to Error Code 0x80070057. In most cases, simply raising the virtual memory especially on Windows 7 Operating-System completely eliminates the error. Moreover, you don't have to be technically advanced to effect the change. Simply follow these steps:-

• Click the Start Button and visit Control Panel
• Click System Security, and proceed to System.
• Click the Advanced System Settings, subsequently proceed to the Advanced Level Tab.
• Click Change, which can be under the Virtual Memory
• Change the virtual memory value. For instance, you can customize entirely from 2000MB to 6000MB.
• Click Set, then Ok. You are done

As with each additional change you make with respect to your Computer, you will have to conclude by re-booting it. This way you make certain that they'll stay as you've established them and apply the necessary modifications. If the error still persists after attempting the preceding fix, download a registry-cleaning software. The software will clean up your disk and free up memory thus increasing the available virtual memory for your computer. This should solve your persistent Error Code 0x80070057.

If you were having some problems with your internet connection and you tried to run the Internet Connections troubleshooter but it displays an error message instead that says, “The default gateway is not available”, read on as this post will show you what you can do to fix this error. The first thing you can do to fix this error is to restart your computer and then try to run the Internet Connections troubleshooter again. However, if you still see the same error message, then you might want to troubleshoot the problem further. You can try to install the Network driver or reinstall the Network adapter drivers. You could also verify the power saving mode or reset TCP/IP as well as disable the Firewall temporarily.

Option 1 – Try installing the Network driver

The very first thing you can do to resolve the error is to install the network driver. It is a common solution to this kind of problem and most users encounter it right after a fresh installation of Windows 10. So if you have done this, then you need to install the network driver so that the network adapters can start working. You can find the network driver in the motherboard CD. On the other hand, if you are using a laptop, you might have to use another computer or mobile to download the network driver from the manufacturer’s website.

Option 2 – Update the Network Adapter drivers

If the first option is not applicable to you since you already have network drivers in your computer, you might want to update the Network Adapter drivers by following 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 them.
• 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 “Windows could not find a driver for your network adapter” error, 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.

You could also try to reinstall the network adapter driver, refer to these steps:

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Option 3 – Try to verify power-saving mode

If you are using a Windows 10 laptop, then you should know that the Power Options panel plays an important role. So if you’re getting an error in your laptop, you have to check some settings that are related to the Power Saving mode. To do so, follow these steps:

• Open Control Panel and go to Hardware and Sound and click on Power Options.
• Next, click on the “Change plan settings” option of your selected plan and then click the “Change advanced power settings” option.
• After that, you should see the Power Options window, and here, expand the Wireless Adapter Settings and Power Saving Mode.
• Now make sure that the Maximum Performance option is selected. If it’s not, select it and save the changes you’ve made.

Option 4 – Try to reset the TCP/IP

As you know, the TCP/IP or the Internet Protocol is the most important thing if you want to use the internet on your computer. That’s why if it ends up getting corrupted, you need to reset the TCP/IP to fix the problem. To reset TCP/IP, refer to these steps:

• In the Windows start the search, type “command prompt” and right-click on Command Prompt from the search results.
• Then select the “Run as administrator” option to open Command Prompt with admin privileges.
• After that, execute this command: netsh int ip reset resettcpip.txt
• Once it’s done, exit Command Prompt and restart your computer and then check if the error is now fixed.

Option 5 – Temporarily disable Firewall

On the other hand, the error could also be due to the Firewall software installed on your computer. Thus, disabling them or any security software installed on your computer is always a good idea you can try when you’re not able to access the shared drive on your computer. There are times when you encounter problems like the error “The default gateway is not available” due to interference of antivirus or security programs. Thus, you have to disable both your antivirus program and Windows Defender Firewall for the meantime and check if it fixes the error or not

If you have suddenly run into a problem when trying to connect or pair your Bluetooth keyboard with your Windows 10 computer, read on as this post will guide you on how exactly you can resolve the problem. This kind of problem typically occurs when you’ve disabled the Bluetooth option. However, this option is already enabled and you still encountered the same error message saying, “Check the PIN and try connecting again”, then you need to troubleshoot the problem further. In most cases, this kind of issue can be fixed when you restart your computer and go to the Windows Settings and select the “Add Bluetooth or other devices” option and then put the keyboard into pairing mode. And when the keyboard appears in the “Add a device” dialog box, just select it. On the other hand, if your Bluetooth keyboard won’t get connected to your Windows 10 computer and you encounter an error that says, “Can’t pair Bluetooth keyboard, Check the PIN and try connecting again”, then you need to check out the options provided below but before you do so, make sure that you create a System Restore point first as some of the troubleshooting options provided involves the Windows Registry.

Option 1 – Try to use the Device Pairing Wizard

The Device Pairing Wizard is the one that allows your computer to look for any new devices and display them underneath it. All you have to do to use this wizard is to follow its instructions to connect your Bluetooth device to Windows 10. To get started, follow these steps:

• First, tap the Win + R keys to launch the Run utility and type “devicepairingwizard” in the field, and then hit Enter to run the Device Pairing Wizard.
• After that, wait for a couple of seconds until the devices appear. Once they do, select the Bluetooth device you wish to add.
• A new screen with a passcode should appear instantly. You need to take note of the given passcode and type them on your Bluetooth keyboard.
• Once done, tap Enter. This should help in pairing your computer to your Bluetooth keyboard.

Option 2 – Try to use the Registry Editor

The next thing you can do to resolve the pairing issue with your Bluetooth keyboard is to use the Registry Editor by following these steps:

• Tap the Win + R keys to open the Run utility and type “Regedit” in the field and then hit Enter to open the Registry Editor.
• Next, navigate to this registry path: HKEY_USERS/.DEFAULT/Software/Microsoft/Windows/CurrentVersion/Bluetooth/ExceptionDB
• From there, look for the folder named “Addrs” and expand it. If you see any folders or keys under it, select them and delete them. These keys represent the MAC address of your Bluetooth devices.
• Once you’re done, restart your computer and try to pair your Bluetooth keyboard once more.

Option 3 – Try running the Bluetooth Troubleshooter

As you know, Windows 10 has various troubleshooters with user-friendly interfaces where you can utilize them to fix issues in your PC. And since you’re dealing with some Bluetooth problem, you have to run the Bluetooth Troubleshooter.

• Open the Windows 10 Settings.
• Then go to Update & Security > Troubleshoot.
• You should find the option for Bluetooth on your right-hand side – click on it then click on the “Run the troubleshooter” option.
• Now follow the next screen options.

Option 4 – Try to reinstall or update the Bluetooth driver

The issue might have something to do with the Bluetooth drivers. It could be that it is outdated and needs to be updated or that you recently updated it and since you have trouble pairing your Bluetooth keyboard, you can update, rollback, or uninstall the Bluetooth drivers. How? Follow the steps below.

• Tap the Win + X keys to open the Device Manager.
• Next, look for the Bluetooth device and right-click on it.
• Select the option “Update driver”.
• After that, a new popup window will appear. In there, select the option, “Search automatically for updated driver software”.

Note: Checking the update may take a few minutes so you’ll have to wait until it finishes. If it is able to find an update, you must install it.

Driver state power failure error can be linked to three things happening in your computer. Incorrect power settings, driver issues, or incompatible hardware. Sadly when this error happens you only receive a blue screen of death with this message: Sadly receiving this blue screen does not really explain which of the three cases is the correct one and causing the unwanted issue. That being said, this article will not offer you a direct solution this time, it will be more like a guide on what to check and to do in order to remove this error, reason for this is the nature of the error itself. If your computer is booting properly and you can enter Windows without issues the first thing you can try is going into power options and set it to high performance, if you are on a laptop set high performance both ways, when plugged and when on battery. Power performance settings can reflect on some hardware and can cause mayhem. After setting reboot the computer and see if the error repeats itself. If the error persists go to the device manager and see if there is hardware that has any kind of warning beside it. If there is, update the driver or remove the driver of the device to see if this fixes the issue. If all of the previous two things fail there is another thing you could try. Turn off your computer and disconnect all hardware except the most basic one. Now, this may take a long period of time but boot your computer and then repeat this process but each time add a new piece of hardware to eliminate and find which one is causing the issue. When found try to see if it is repairable through driver updates or get a new device.

Microsoft office has two major packages, an online one, and an offline version. The online version of the course is Office 365 that requires a monthly subscription and it is always regularly updated and maintained. Another version is more of a typical old school application, install it and use it, no constant internet connection is required and no monthly subscription is required, buy once and use it. The last version of buying it once and use it was Office 2019 and after two years we are going to receive a new version soon. Microsoft has set its release date for October 5^th of this year and as always it will feature the current latest version of office applications and one-time purchase. The new office will support dark mode and other improvements tied to the new Windows 11 and some specific features tied to Office itself.