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Blinking or Flashing Desktop After login - Windows 10 Upgrade

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

Restoro box imageError 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.

  1. In the Command Prompt, type taskkill /f /im explorer.exe. This will stop the blinking or flashing.
  2. 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)
  3. 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.
  4. 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.
  5. Type ren bushell.dll bushell-crash.dll
  6. 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.

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Option 1 – Look for the incompatible programs

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Option 3 – Try creating a new user account

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Error Code 0xd0000272 – What is it?

Error code 0xd0000272 occurs when Windows users are unable to activate their operating system. This usually occurs due to activation servers being busy or unavailable and affects Windows 8, Windows 8.1, and Windows 10 users. Common symptoms of the error code include the following:
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Further Information and Manual Repair

To improve your chances of resolving issues related to Windows activation error codes, use manual repair methods and procedures. These are often successful as they address the issues causing the error codes to occur, whether there be missing or corrupted system files, network connectivity issues, or invalid product keys.

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  1. Method Two: Run Windows Update Troubleshooter

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Option 2 – Try to restart the Windows Installer Service

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Option 3 – Try to unregister and re-register the Windows Installer Module

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Option 1 – Check the Sleep Advanced Settings

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Option 2 – Try to run the Power troubleshooter

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Option 3 – Troubleshoot Sleep Mode issue in a Clean Boot State

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Option 4 – Try to run the Power Efficiency Diagnostics Report

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Option 1 – Try to run the Playing Audio Troubleshooter

Since the Windows 10 operating system has the Playing Audio Troubleshooter, you can use this troubleshooter to try and fix the problem with the “No Audio Output Device is installed” error. You can access this tool in the Control Panel or in the Taskbar Search and even on the Troubleshooters page of Windows 10. Run this troubleshooter and see if it can fix the issue or not.

Option 2 – Try to restart the Windows Audio-related services

The next thing you can do to fix the problem is to restart the services related to Windows Audio. Although the audio services start automatically on every system boot, there are times when they might fail to start. Thus, you can start these services manually by following these steps:
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  • Then look for the services named “Windows Audio” and “Windows Audio Endpoint Builder”.
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Option 3 – Try to update the Audio driver

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  • Tap the Win + R keys to open the Run dialog box and then type in devmgmt.msc and tap Enter or click OK to open the Device Manager.
  • Expand the section for the outdated device drivers.
  • And then select the outdated driver(s) and right-click on it/them.
  • From the drop-down menu, select the Update Driver option and follow the on-screen instructions to install the latest version of the driver.
  • Then also click on the option, “Search automatically for updated driver software.
  • Restart your PC after the installation.
Note: If updating or reinstalling the Audio driver didn’t work, you can go to the manufacturer’s website and look for the support section where you can download the drivers for your computer. You just need to take note of your PC’s correct model and model number so you can find the appropriate driver.

Option 4 – Try changing the default test tone rate and bit depth

Windows selects a default test tone rate and bit depth depending on your headphone or speaker. This allows you to look for the best sound quality from your audio output device. So if your headphone or speaker has some problems with the default settings, then it’s no wonder why you’re getting the “Failed to play test tone” error. To fix this, you can try to change the default test tone rate and bit depth by following the steps below.
  • First, you need to open the Windows Settings panel and then go to System > Sound.
  • Next, look for the Device properties option located on your right-hand side and click on it.
  • After that, select the Additional device properties option and go to the Advanced tab.
  • From there, select a different test tone rate and bit depth and then click on the Test button.
  • Once done, check if it was able to fix the problem or not.

Option 5 – Try disabling the Sound or Audio enhancements

To make your operating system’s specific hardware sound nothing but perfect, both Microsoft and third-party vendors have shipped audio enhancement packages which are usually referred to as “Audio Enhancements” in Windows 10. However, there are instances when instead of improving the sound or audio quality of your computer, it can cause problems so to fix the problem you need to turn off these audio enhancements. How? Simply follow the steps below.
  • Type in “Sound” in the taskbar search and then from the list of results, select “Sound Control Panel”.
  • After clicking Sound, the Sound properties box will pop up. From there, go to the Playback tab and right-click on the default device i.e. Speakers or Headphones then select Properties.
  • After that, the Speakers properties box will appear. From there, go to the Enhancements tab and select the checkbox for the “Disable all enhancements” option.
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Solution if you can not log into windows due to repeating error

If an error repeats itself constantly and you are unable to boot into Windows itself you will need to prepare Windows boot USB. You can download the Microsoft media creation tool here and then use it to create a bootable USB with Windows 10. Once the USB is done reboot your system and boot from USB. CHoose repair Windows instead of install and follow onscreen instructions.

Solution if you can log into Windows

If you can log into Windows bring up the command prompt in administrator mode and type in it SFC /SCANNOW followed by ENTER, wait for the whole operation to finish, and then reboot the system.
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Easy Remove ShopAtHome Guide

ShopAtHome Toolbar is a browser extension. This extension tracks information when you visit a website, whether typing in the URL or clicking a link, the Browser App recognizes whether the URL is that of an Affiliate Store, and, if so, may redirect you through the affiliate network site to the Affiliate Store’s website, at which time, a tracking cookie will be placed in your browser. This cookie is the tracking mechanism that will follow your transaction with the Affiliate Store.

During installation, the Browser App may automatically change the default search engine used by your Web browser, whether via a built-in search box or otherwise, to our search engine. Upon installation and setup, it defines an auto-start registry entry which makes this program run on each Windows boot for all user logins. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times.

Multiple anti-virus scanners have detected possible malware in ShopAtHome.com Helper and are therefore classified as potentially unwanted and flagged for optional removal.

About Browser Hijackers

Browser hijacking is actually a form of an unwanted program, often a web browser add-on or extension, which then causes modifications in the browser’s settings. Browser hijackers can do a variety of things on your PC. The idea would be to force users to visit certain sites that are looking to increase their visitor traffic and generate higher ad income. A lot of people assume that these kinds of sites are legitimate and harmless but that is incorrect. Almost every browser hijacker poses an actual threat to your online safety and it is important to classify them under privacy risks. They do not just screw up your web browsers, but browser hijackers could also modify the system registry, leaving your computer or laptop susceptible to other forms of hacking.

Browser hijacking signs and symptoms

Signs that your web browser is hi-jacked include: 1. the home page of your web browser is changed suddenly 2. you find yourself regularly directed to some other web page than the one you actually meant 3. The default search page of the browser is changed 4. you find many toolbars in your web browser 5. you see a lot of pop-ups on your computer screen 6. your internet browser starts running sluggishly or displays frequent glitches 7. Inability to navigate to particular sites, particularly anti-malware as well as other security software sites.

How browser hijacker infects PCs

Browser hijackers infect computers through malicious email attachments, downloaded infected documents, or by checking out infected internet sites. They also come from add-on programs, also called browser helper objects (BHO), web browser extensions, or toolbars. Other times you may have unintentionally accepted a browser hijacker as part of a software program package (generally freeware or shareware). Popular examples of browser hijackers include Conduit, CoolWebSearch, Coupon Server, OneWebSearch, RocketTab, Delta Search, Searchult.com, and Snap.do.

The best ways to get rid of browser hijackers

Some hijackers could be removed simply by uninstalling the related freeware or add-ons from the Add or Remove Programs in the Microsoft Windows Control Panel. Sadly, the majority of the software packages utilized to hijack a web browser are deliberately designed to be hard to detect or remove. Besides, browser hijackers can modify the Windows registry so it can be very difficult to fix manually, particularly if you are not a very tech-savvy person.

Help! Malware Preventing Anti-virus Installation And Access To The Web

All malware is inherently dangerous, but certain kinds of malware do a lot more damage to your computer or laptop than others. Some malware sits in between the computer and the net connection and blocks some or all websites that you would like to visit. It might also block you from adding anything on your PC, especially anti-malware applications. If you’re reading this, odds are you’re stuck with a virus infection that is preventing you to download and/or install Safebytes Anti-Malware software on your PC. Do as instructed below to get rid of the malware by alternate methods.

Boot your PC in Safe Mode

In the event the malware is set to load at Windows startup, then booting in Safe Mode should avoid it. Just the minimum required applications and services are loaded when you boot your personal computer in Safe Mode. To launch your Windows XP, Vista, or 7 PCs in Safe Mode with Networking, please do as instructed below. 1) Press the F8 key repeatedly as soon as your PC boots, but before the big Windows logo shows up. This will conjure up the “Advanced Boot Options” menu. 2) Make use of the arrow keys to choose Safe Mode with Networking and press ENTER. 3) Once you get into this mode, you should have online access again. Now, obtain the virus removal application you need by utilizing the browser. To install the application, follow the guidelines in the installation wizard. 4) Right after installation, do a full scan and let the software delete the threats it detects.

Use an alternate web browser to download a security program

Malicious program code can exploit vulnerabilities in a particular browser and block access to all antivirus software websites. The best solution to avoid this problem is to choose a browser that is well known for its security features. Firefox contains built-in Phishing and Malware Protection to keep you secure online.

Install and run anti-virus from a USB drive

Here’s another solution which is using a portable USB anti-virus software package that can check your system for viruses without the need for installation. Try these simple actions to clean up your affected computer by using portable anti-malware. 1) Make use of another virus-free computer system to download Safebytes Anti-Malware. 2) Put the USB drive into the clean PC. 3) Double click on the downloaded file to run the installation wizard. 4) When asked, choose the location of the USB drive as the place where you would like to store the software files. Follow the on-screen instructions to finish the installation. 5) Now, plug the thumb drive into the corrupted system. 6) Run the Safebytes Anti-malware directly from the pen drive by double-clicking the icon. 7) Run Full System Scan to identify and clean-up up all types of malware.

SafeBytes Anti-Malware Features

If you’re planning to purchase anti-malware for your computer system, there are many brands and utilities for you to consider. Some are very good ones, some are ok types, while some are simply just fake anti-malware software that could harm your PC themselves! While looking for an antimalware tool, pick one that provides reliable, efficient, and total protection against all known computer viruses and malware. While considering the dependable software programs, Safebytes AntiMalware is undoubtedly the highly recommended one. Safebytes is among the well-established computer solutions firms, which provide this complete anti-malware tool. With its cutting-edge technology, this application can help you remove multiples types of malware including computer viruses, worms, PUPs, trojans, adware, ransomware, and browser hijackers. SafeBytes anti-malware takes computer protection to a totally new level with its enhanced features. Here are a few popular features found in this program: Antimalware Protection: With a critically acclaimed anti-malware engine, SafeBytes offers multilayered protection that is intended to find and get rid of viruses and malware that are hidden deep inside your computer’s operating system. Live Protection: SafeBytes provides complete and real-time security for your PC. It’ll continuously monitor your pc for hacker activity and also gives users sophisticated firewall protection. Extremely Speed Scanning: SafeBytes Anti-Malware has got a multi-thread scan algorithm that works up to 5x faster than any other anti-malware software. Web Filtering: SafeBytes provides an instant safety rating on the pages you are about to check out, automatically blocking harmful sites and make sure that you’re certain of your online safety while browsing the net. Lightweight Application: This software program is not “heavy” on the computer’s resources, so you will not find any overall performance troubles when SafeBytes is operating in the background. 24/7 Customer Service: Skilled technicians are at your disposal 24/7! They will quickly fix any technical issues you might be encountering with your security software.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove ShopAtHome without the use of an automated tool, it may be possible to do so by removing the program from the Windows Add/Remove Programs menu, or in cases of browser extensions, going to the browsers AddOn/Extension manager and removing it. You will likely also want to reset your browser. To ensure the complete removal, manually check your hard drive and registry for all of the following and remove or reset the values accordingly. Please note that this is for advanced users only and may be difficult, with incorrect file removal causing additional PC errors. In addition, some malware is capable of replicating or preventing deletion. Doing this in Safe Mode is advised.

The following files, folders, and registry entries are created or modified by ShopAtHome

Files: File %PROGRAMFILESSelectRebatsToolbarShopAtHomeToolbar.dll. File %WINDIRDownloaded Program Filesinstall.inf. File %WINDIRDownloaded Program Filessahagent-cdt1004.exe. File %LOCALSETTINGSTempsahagent-cdt1004.exe. File %LOCALSETTINGSTempcdt1004.sah. File %LOCALSETTINGSTempsetup4002b.cab. File %LOCALSETTINGSTempsetup4002b.ini. File %SYSDIRap9h4qmo.ini. Search and Delete: ap9h4qmo.ini. File %SYSDIRap9h4qmo.exe. File %SYSDIRBundleLite_westfrontier1001.exe. File %SYSDIRap9h4qmo.ini. File %WINDIRa95kfrhe.exe. File %SYSDIRa95kfrhe.ini. File %SYSDIRa95kfrhe.ini. File %SYSDIRq17i9a4j.ini. Search and Delete: ap9h4qmo.ini. Directory %LOCALSETTINGSTempSahUpdate. Registry: Key 759C257C-F750-4F52-AB58-FB8A7B8770FE at HKEY_CLASSES_ROOTTypeLib. Key HKEY_CLASSES_ROOT named GRInstall7.Installer Key HKEY_CLASSES_ROOT named GRInstall7.Installer.1
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Fix Netwtw04.sys BSOD Error in Windows 10
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.
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