Setup has failed to determine install choices

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.

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Removing Search.schooldozer.com hijacker

What is Search.schooldozer.com? And how does it function?

Search.schooldozer.com is a browser extension that functions as a search engine. It is developed and maintained by “Schooldozer”. It claims to improve users’ browsing experience by providing them with improved search results. However, it does not really do the things it claims to do. In fact, they’re quite the opposite ones – instead of improving the browsing experience, it makes users’ browsing experience unsafe and full of sponsored content. This is in contrast to what it states in its Privacy Policy:
“Install applications the easy way and without the hassle, using the Schooldozer downloader. The Schooldozer platform stems from years of experience with installing applications, resulting in a highly optimized process, yielding faster downloads, better user experience, and more successful installations.”
In addition, once installed Search.schooldozer.com is installed, it will change the default settings of a browser such as the default search engine, homepage, and new tab page. This is why security experts regard this browser extension as a browser hijacker and a potentially unwanted program. The modification of the browser's settings allows it to control users’ browsing by redirecting them to sponsored sites as well as deliver sponsored content from its affiliated sites in order to gain profit via pay-per-click marketing. And if you think that the ads it displays are harmless, think again for some of these ads can redirect you to suspicious websites that might contain harmful content. What’s more is that this browser hijacker can also keep track and monitor all your browsing activities in order to obtain your browsing data like search queries, what sites you always visit, browsing history, browser type, OS version, and so on. The information collected is then used and may even be shared with its affiliated third parties to deliver more customized and personalized advertisements.

How is Search.schooldozer.com distributed over the web?

Like a typical browser hijacker, Search.schooldozer.com is distributed using the software bundling method where several unknown and unwanted programs are bundled in a software package. Thus when you install any software bundle, make sure to always opt for the Custom or Advanced installation setup rather than the quick setup to avoid installing unwanted programs like Search.schooldozer.com. To remove Search.schooldozer.com from your computer, follow the removal guide below carefully. Step 1: Start the removal process by closing all the browsers infected with Search.schooldozer.com. If you’re having a hard time closing them, you can close them using the Task Manager just tap on Ctrl + Shift + Esc. Step 2: After you open the Task Manager, go to the Processes tab and look for the infected browser’s process and end it. Step 3: Then close the Task Manager and tap the Win + R keys to open Run and then type in appwiz.cpl to open Programs & Features in Control Panel. Step 4: From there, look for Search.schooldozer.com or any unfamiliar program that could be related to it under the list of installed programs and once you’ve found it, uninstall it. Step 5: Edit your Hosts File.
  • Tap the Win + R keys to open then type in %WinDir% and then click OK.
  • Go to System32/drivers/etc.
  • Open the host file using Notepad.
  • Delete all the entries that contain Search.schooldozer.com.
  • After that, save the changes you’ve made and close the file.
Step 6: Reset all your browsers to default to their default state.

Google Chrome

  1. Launch Google Chrome, press Alt + F, move to More tools, and click Extensions.
  2. Look for Search.schooldozer.com or any other unwanted add-ons, click the Recycle Bin button, and choose Remove.
  3. Restart Google Chrome, then tap Alt + F, and select Settings.
  4. Navigate to the On Startup section at the bottom.
  5. Select “Open a specific page or set of pages”.
  6. Click the More actions button next to the hijacker and click Remove.

Mozilla Firefox

  1. Open the browser and tap Ctrl + Shift + A to access the Add-ons Manager.
  2. In the Extensions, menu Remove the unwanted extension.
  3. Restart the browser and tap keys Alt + T.
  4. Select Options and then move to the General menu.
  5. Overwrite the URL in the Home Page section and then restart the browser.

Internet Explorer

  1. Launch Internet Explorer.
  2. Tap Alt + T and select Internet options.
  3. Click the General tab and then overwrite the URL under the homepage section.
  4. Click OK to save the changes.
Step 7: Hold down Windows + E keys simultaneously to open File Explorer. Step 8: Navigate to the following directories and look for suspicious files associated to the browser hijacker such as the software bundle it came with and delete it/them.
  • %USERPROFILE%Downloads
  • %USERPROFILE%Desktop
  • %TEMP%
Step 9: Close the File Explorer. Step 10: Empty the contents of Recycle Bin.
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How to Fix Error Code 0xc00007b in Windows 10

Error Code 0xc00007b – What is it?

Error code 0xc00007b usually manifests itself via the inability to start an application properly. It can occur when users attempt to run a game or other programs on their computer. In such a case, the application will not start and a message box will pop up stating that error code 0xc00007b has occurred. The error code is likely to occur when users attempt to run a program in the incorrect or inappropriate bit. For instance, if you try to load a 32bit location with a 64bit location.

Solution

Restoro box imageError Causes

Error code 0xc00007b affects various versions of the Windows operating system, including Windows 7, 8, 8.1, and Windows 10. In the case of error code 0xc00007b for Windows 10, the error may be caused by issues related to software you’ve installed on your machine. This may cause software conflict resulting in the need to install programs like DirectX. Left unchecked, error code 0xc00007b could incite other error codes in Windows 10, such as error code 0xc004f034.

Further Information and Manual Repair

To repair error code 0xc00007b for Windows 10 devices, users will need to implement at least one manual repair procedure. Manual repair methods are effective in combating these issues as they can address the issues causing the error in the first place, thus fixing the problem.

The manual repair procedures for fixing error code 0xc00007b are very straightforward and can be implemented with little technical knowledge. However, you may need to contact a Windows repair technician if you have difficulty fixing the error code after completing the manual repair methods listed below.

Method One: Install Microsoft DirectX

Microsoft DirectX is an application usually included in the Microsoft operating system. It enables users to access high-speed gaming and multimedia on their PC. The latest version of this Windows technology is available on Microsoft’s official site.

Visit the Microsoft website and search for DirectX End-User Runtime Web Installer. Once you have located the latest version of the program, select the preferred language you would like DirectX to run in, and then click download. Run the program, then be sure to reboot your computer.

Note that this solution should only be applied if you are having issues running or displaying a gaming or multimedia application. Once you’ve correctly installed the latest version of DirectX, it should be able to fix underlying issues that may be causing error code 0xc00007b to occur. If you are still unable to run applications after completing this manual repair procedure, however, you will need to apply another method to fix error code 0xc00007b for Windows 10.

Method Two: Install Latest Version of .NET Framework

.NET Framework, a framework developed by Microsoft, provides solutions for users who may be having problems with applications. To download the latest version of the .NET framework, follow the steps listed below.

  • Step one: Open your favorite web browser
  • Step two: Enter www.microsoft.com/net
  • Step three: Click Downloads
  • Step four: Select the latest version of the .NET Framework by clicking the framework at the top of the list. (Currently, the latest version is .NET Framework 4.6.2.)
  • Step five: Select preferred language, then download
  • Step six: Run software.

To ensure you successfully download the latest version of the .NET Framework, verify your computer is properly connected to the Internet while downloading the software. Also, follow the instructions provided on the Microsoft website.

After completing the download process, reboot your computer then check if you have successfully resolved error code 0xc00007b for Windows 10. If this manual repair method is successful, you will be able to access your gaming and multimedia programs. Otherwise, the error code message box will reoccur, stating that the application error code is present on your device. Apply the next manual repair procedure to correct the error code if this reoccurs.

Method Three: Install Windows Updates

In certain instances, application error codes like error code 0xc00007b affect PC users who fail to install the most current Windows updates on their device. That is why it’s important to check your system and ensure you have installed all the latest updates.

The updates, if any are available, will automatically be installed on your PC once you access Windows Update in Settings. Reboot your computer then check if you are able to run programs that previously would not open due to error code 0xc00007b. If problems persist resulting in the reoccurrence of the error code, reinstall the applications you are unable to open or get help from a Windows repair technician.

Method Four: Download an Automated Tool

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

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Regular vs Gaming mouse comparison

You have probably heard a lot of good things about gaming mice, how they are better feeling, better in any way possible and it is all true, everything you heard is actually true, they are superior in any way to a regular mouse but with one big disadvantage, and that would be the price. While you can find a regular mouse for pocket change, a gaming mouse is in comparison very expensive even for entry-level ones.

gaming mouse

In this article we will explore all advantages and compare it with the regular one so you can come up with your own conclusion about do you really need one for yourself or if you are fine with regular.

Price

As stated price is one factor that does not favor gaming mice. Regular mouse for a personal computer goes around 10 or 20 USD, while entry-level in gaming one will be 40 USD and can go up to 250 USD, this large gap in price is usually determining factor why people pick up regular one. If you are on a really tight budget go for the regular one, but if you can afford a gaming one get it without second thoughts.

Software

This is where you will see the big difference between mice. Regular ones when connected are recognized and the driver is automatically installed and you can use it, same goes with gaming ones but with one big difference, you have an option to install additional manufacturers' software specially tailored for your mouse. In the application, you will be able to access some features that are specific to the mouse model that you could not set in typical Windows mouse properties. Beside more options software can also have features like setting your profiles and saving them to be recalled when you need them on the fly.

Sensitivity of mouse

The sensitivity of the mouse is measured in dots per one inch or short DPI, this is directly shown on your screen by how fast your mouse can move, higher sensitivity means your mouse will move faster across the screen and lower means it will move slower. All gaming mice come with buttons and settings that will allow you to change DPI on the fly and you can choose precise DPI settings in the software.

The regular mouse comes with DPI around 800 and goes to 1200 typically and does not have usually the option to change this while gaming mice start at 400 and can go as high as 26000 with the option to change it. Some regular mice can have only 1 option of DPI, usually very cheap ones.

Polling rates in mice

Pooling rate is the measurement of how often your mouse reports where it is positioned on the computer. The higher the pooling rate, the more responsive your mouse will be and vice versa. It is measured in hertz (Hz) and regular mice have them around 125Hz that is enough if you are using a computer for office, internet, and mail work.

If you are working in design or gaming you will need more than 125Hz polling rate, luckily gaming mice come with a minimum of 500Hz as an entry point and some hi-end models are going as far as 8000Hz. This very high pooling rate will get some extra load on your CPU but the mouse itself will be maximally responsive and will respond even to the smallest moves.

Ergonomics

Regular mice are well just mice, they are typical shape and size, gaming mice are made with ergonomics in mind. How they are made for extensive daily use of several hours per day they are constructed in a way to offer a pleasant and pain-free experience.

If you work on a computer for long periods of time consider gaming an ergonomic mouse since it will take the strain from hands and place them in a more natural position.

Macro keys

Gaming mice most of the time come with more keys compared with regular ones and good thing is that via its software you can tie certain actions to these extra keys making work or gaming more pleasant and quicker.

Components and material quality

In order to make regular mice more affordable and cheaper materials and quality of components had to suffer. Gaming mice have millions of guaranteed clicks by companies that make them before they break and regular ones usually do not guarantee a single one. This is due of course quality of materials that have been used in constructing these devices.

In the long term, if you use a gaming mouse for typical daily tasks it will outlive your regular one and on the side offer you more pleasant and responsive use along the way.

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How to Fix Error Code 0xC004C770

Error Code 0xC004C770 – What is it?

If the Error Code 0xC004C770 popped up on your computer during your activation of the Windows 10 software, don’t worry. This is a fairly common error, especially for people who own more than one computer upon which Windows 10 is installed and activated. The gist of this error code is that the product key that you have entered has already been claimed or used on a different computer. Because there are limitations on the number of computers that can use any given license activation code or product key, this error code can arise when you have exceeded that limit. If you have a single-use license and have already entered the particular product key onto another machine, you may see this error come up during activation.

Both Error Code 0xC004C770 and Error Code 0x803FA071 arise from the same problem and the same steps can be used to resolve both error codes.

Solution

Restoro box imageError Causes

Error Code 0xC004C770 is likely to appear on your screen during activation of Windows 10 if you or anyone else in your organization have already entered in the product key used on another computer. If you have a multiple-use license, the product key that you are entering may already have been used for the maximum number of computers allowed under that license.

Further Information and Manual Repair

There are two basic methods for addressing the issues associated with Error Code 0xC004C770. These methods can easily be implemented by anyone who is comfortable interacting with the Windows Store from their computer, which makes the resolution of this particular error code fairly simple and straightforward.

If you are unable to complete the steps below or Error Code 0xC004C770 has not been resolved after following the guides below, contact a Windows technician who is familiar with the Windows 10 activation process to assist you in the process. You can also get in touch with the Windows technical support team to assist you in the process if needed.

Method One: Purchase A New Product Key from Windows

If you have already used the product key on another computer or have used it on the maximum number of allowed devices, you may need to purchase an additional product key for the computer with Error Code 0xC004C770. Product keys can be purchased physically from a retailer that sells Windows 10 software licenses or purchased directly from the Windows store.

To purchase a new product key directly from the Windows Store, follow the steps below:

  • Step One: Select the Windows start button at the bottom of your toolbar. Click on “Settings,” then select the option for “Update and Security.”
  • Step Two: Click on the “Activation” option.
  • Step Three: In the menu that appears, choose the option to “Go to Store” and follow any on-screen instructions to finalize a purchase of the Windows 10 software and product key.
  • Step Four: Use the new product key to complete the installation and activation of the Windows 10 software on your computer.

If you are unable to see the “Go to Store” option when you reach the “Activation” page, you may not be set as an administrator of your machine. In this case, get in touch with the support personnel from your company to complete the purchase, installation, and activation process on your computer.

Method Two: Attempt to Finish Activation via Phone

For users who have changed out parts of their computer’s hardware, like putting in a new motherboard or activating a new hard drive, you may have more success if you attempt activation through a phone.

In order to activate your copy of Windows 10 from your phone, follow the steps below:

  • Step One: On your mobile device, open up the search box from the taskbar.
  • Step Two: In the search box, enter the phrase “SLUI 04.”
  • Step Three: Select the “SLUI 04” option that appears.
  • Step Four: Follow the directions given on the screen to complete the activation process for your copy of Windows 10.

As with any error code resolution, if the methods above are not successful or if you are not comfortable with your ability to successfully complete the steps above, get in contact with a qualified professional who is trained in the Windows 10 activation process to assist you or download a powerful automated tool to get the job done.

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Device frequently disconnects from hotspot
As you know, Windows 10 comes with the option to create Mobile Hotspot for other devices. This allows you to share your Ethernet connection. However, there are times when one of your devices might fail to reconnect to the mobile hotspot again. For instance, you moved out of the Wi-Fi range because you have somewhere to be and whatnot and when you’re back you find that you are now unable to reconnect to the Windows 10 Hotspot or the shared network. Although you can always restart the mobile hotspot to resolve the problem, however, it might only be a temporary fix. So in this post, you will be given options for a much better solution to the problem. This kind of problem seems unusual and does not occur that often. To fix it, you can try to set up DNS on your Windows 10 device and then configure the settings on the mobile device. It seems that what’s happening here is that the mobile device is unable to lock on to the Mobile Hotspot when the IP address changes for some reason.

Option 1 – Try changing the DNS settings on your laptop

In this option, you need to make sure that IPv4 and IPv6 are selected on your Ethernet connection. You also have to change the Preferred DNS server as well as the Alternate DNS server to 8.8.8.8 and 8.8.4.4, respectively. You also have to validate the settings before you exit just to ensure that you’ve entered everything correctly. After that, open Command Prompt and run the ipconfig command and then take note of the IP address, Gateway DNS 1 and DNS 2.

Option 2 – Try changing the Wi-Fi settings on your mobile device

This option should be mostly the same on all your mobile devices. And given that OEMs build their customization and skin, you might have to fiddle around a little to get the settings. Refer to the steps below to change the Wi-Fi settings:
  • Go to the Settings of your mobile device and tap on Wi-Fi.
  • Then click the Mobile Hotspot connection that you’ve created on your laptop.
  • After that, input the password and tap the Advanced options.
  • From there, tap on IP settings and select the Static option instead of DHCP.
  • Now you have to enter the IP address, Gateway, DNS 1, and DNS 2 of the laptop you’ve taken note of earlier and that’s it.
Note: If you are already connected to the Mobile Hotspot, long press on the Wi-Fi network and select the Modify Network option and then follow the steps given above to change from DHCP to static. Once you’re done, your mobile device should now be able to connect to the Windows 10 Mobile Hotspot all the time.
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Upcoming comic book movies with release dates
upcoming comic moviesThe World of Superhero movies has gone through some interesting variations, from good ones to bad ones, from big-budget ones to small ventures, even from large well-known characters to niche ones. No matter what you think of some of them no one would disagree that since the release of Iron Man and starting Marvel cinematic universe superheroes movies exploded in popularity. Following the Superhero craze, let’s see what is coming up in comic books transferred to big screens with their release dates.

List of upcoming movies

Shang-Chi and the Legend of the Ten Rings, Sept. 3, 2021 Trailer Venom: Let There Be Carnage, Oct. 15, 2021 Trailer Eternals, Nov. 5, 2021 Trailer Spider-Man: No Way Home, Dec. 17, 2021 Trailer Morbius, Jan. 28, 2022 Trailer The Batman, March 4, 2022 Trailer Doctor Strange in the Multiverse of Madness, March 25, 2022 Thor: Love and Thunder, May 6, 2022 DC League of Super-Pets, May 22, 2022 Black Panther: Wakanda Forever, July 8, 2022 Black Adam, July 29, 2022 Trailer Spider-Man: Into the Spider-Verse 2, Oct. 7, 2022 The Flash, Nov. 4, 2022 The Marvels, Nov. 11, 2022 Aquaman and the Lost Kingdom, Dec. 16, 2022
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Nostalgic gaming with Retroid pocket 2
We have talked about gaming on old computers and have covered new and upcoming Steam deck handheld console. Today we are combining old gaming with a handheld console and our target of talk is Retroid pocket 2. This product is packed with really high-quality plastic and with some great features in it. retroid pocket 2So let's dive into this cool handheld in more detail and find out why we like it so much.

Good manufacturing quality

Plastic and overall manufacturing quality are really, really good. The battery is great, packing 4000mAh that can hold over 3 hours of nonstop gaming, and all buttons and joysticks are great. The screen is a 640 x 480 60Hz 3.5″ IPS screen (4:3 aspect ratio) that performs really great for its purpose, retro gaming. There is a Digital D-Pad and dual analog joysticks. The right joystick is the lower profile to avoid being accidentally moved when pressing the four gaming buttons. There are three buttons at the bottom which are Home, Start, and Select. On either side are good-quality stereo speakers. On the bottom of the device are a Micro SD Card slot and a 3.5mm headphone port. On the top of the device are Left and Right shoulder and trigger buttons. There are the power button and volume adjustments. There are a USB Type-C OTG port and a Micro HDMI output for connection to a TV.

Good technical statistics

Good, not great but then again since this is retro handheld you cannot really expect some crazy stuff like alder lake inside. So the console is punching ARM Cortex A7 CPU with 2 cores and a clock of 1.5GHz paired with ARM Mali 400-MP2 500MHz GPU. The console has 1GB LPDDR3 RAM memory and 8GB eMMC Storage where 5GB is freely available, the rest is taken for OS. As mentioned before the display is 640x480 resolution with a size of 3.5″. The battery is Lithium-Ion with a power of 4000mAh and on the handheld, there is a USB Type-C connector, 3.5mm headphone jack, and Micro-HDMI. It also has Wifi/Bluetooth 4.0

Retroid Pocket 2 OS and support

Pocket 2 comes with Android 6 but you can update its firmware to the 8.1 version on the official site that I would highly recommend. New versions of the handheld will come with 8.1 on it from the box. Having Android as OS opens many possibilities like you can download Android apps such as Steam Link, allowing you to play actual PC games on your Retroid Pocket 2. Not just that, if it does get a newer version of Android it could even have the ability to use xCloud, Xbox’s cloud gaming service. Of course, hardware will not be able to handle modern games but the option is still there and for some old PC titles available on steam like Commander Keen, for example, this is a great option. The console can emulate basically everything up to Dreamcast, including N64, PSP, and Playstation 1. It can emulate Nintendo DS also, but it can only do so with one screen. The only problem with this console is you will need to install and update Apps. You’ll need to learn about RetroArch, an app that lets you download emulators or cores to play games.

Retroid price

The last thing on the list is the price of the console itself. Going just under the 100$ mark this really makes it an affordable option for plenty of people that would like to experience retro handheld gaming or for ones like me, nostalgic gamers wanting to relive some era of playing games on the road.

Conclusion

Among Chinese handheld devices for retro gaming, Retroid Pocket 2 is really on top of what the market can offer. If you are looking for a great handheld retro console and are not afraid of little dive-ins into the OS and various configurations, Pocket 2 will reward you with plenty and wide emulation support.
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How to Fix Fatal Error c000021a

Fatal Error c000021a - What is it?

Fatal Error c000021a is a type of Windows stop error also known as the blue screen of death (BSoD) error. When this error occurs, it causes the computer screen to go blue and locks the user out of the current activity. This error code is fatal and can lead to serious issues like system crashes and freeze. The error code is usually displayed in the following format:
STOP: c000021a {Fatal System Error} The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x0000000)

Solution

Restoro box imageError Causes

Fatal Error c000021a occurs when the Windows kernel detects that either Winlogon.exe or Csrss.exe service processes have stopped responding or failed to load.  When this happens the error code pops up on the screen. Nonetheless, this is not the only reason for the occurrence of this error. There are plenty more reasons why Fatal Error c000021a may pop on your computer screen. These include:
  • Missing or corrupt hardware drivers
  • Faulty hardware
  • Windows System Restore failed during the rollback process
  • Malware or viral infection
  • Registry issues
No matter what the reason may be, it is advisable to fix the error right away without any delays. Remember it is a fatal error and can cause a great deal of damage to your PC.

Further Information and Manual Repair

Fatal Error c000021a is a serious PC issue but this does not mean you have to hire an expert to get it fixed. The good news is that this error is actually quite easy to resolve. You don’t have to be a technical whiz or a computer programmer to fix Fatal Error c000021a on your PC. Here are some do it yourself methods to fix this error code right away without any hassle: Let’s get started:

Method 1: Update Your PC Drivers

As we mentioned about corrupt or missing drivers can be one of the many reasons for the occurrence of this error. So, check the drivers first. Perform a driver scan and make sure all your drivers are updated.

Method 2: Perform a Windows System Restore

To do this, first launch Task Manager by pressing CTRL+SHIFT+ESC on your keyboard. Now click on the application tab and then click ‘New Task’ then browse. After that, go to C:\Windows\System32\Restore  folder and then double click the rstrui.exe file. This will help start system restoration. Your computer will reboot during the process and hopefully, the error will be resolved. Nonetheless, if the error still persists then try methods 3 and 4.

Method 3: Scan for Viruses

Sometimes Fatal Error c000021a may also occur due to malware infection. Your PC may be affected by viruses hidden in different locations without you knowing about it. Therefore to resolve this error, it is recommended to run an antivirus and scan for viruses. If detected, remove them right away to fix the error code.

Method 4: Repair the Registry

Another method to resolve Fatal Error c000021a code on your system is to repair the registry. The registry stores all the information and activities performed on the system. If it is not cleaned frequently, it gets loaded with too many files unnecessary and obsolete files like the junk files, cookies, internet history and temporary files which corrupts and damages the registry thereby generating blue screen of death error codes like Fatal Error c000021a. Though you can repair the registry manually it can be both time-consuming and slightly difficult especially if you are not a computer programmer. Therefore it is advisable to download a registry cleaner to fix it right away.

Automatic Repair with Restoro.

Whether the Fatal Error c000021a code occurs due to viral infection or registry issues, download Restoro. This is a next-generation, advanced, and multi-functional PC Fixer. This software is deployed with multiple utilities such as a powerful registry cleaner, an antivirus, a system optimizer, and more. The registry cleaner scans the entire PC and detects all types of registry issues at once. It cleans the registry, wipes out all the unnecessary files, and restores the registry back to normal. Simultaneously, the antivirus embedded in this software detects all types of viruses including malware, adware, spyware and Trojans and removes them in seconds. The system optimizer feature ensures the speed and performance of your PC are not compromised during the repairing process. It ensures your PC works at its optimal speed. Restoro is a one-stop solution for all your PC needs. It has a user-friendly interface making it easy for all levels of users to work around. It is compatible with all Windows versions Click here to download Restoro and resolve the Fatal Error c000021a code on your PC today!
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KVM switch and its usage

You probably heard about switches for LAN but not a lot of people heard about KVM switches. So what exactly is KVM switch?

KVM switch

If we look at the name, it is a shortcut for Keyboard, Video & Mouse and the original idea was to have multiple computers but one keyboard, mouse, and monitor. These peripherals would be connected to the KVM switch and other computers could all use one set of these on the fly when needed.

The technology behind the switch is a little interesting since it will actively fake signals to other computers that are not using peripherals. Once they are switched to them the transition is smooth and not noticeable. In old days these switches were more important than today since on every mouse or keyboard disconnection you had to reboot the computer, and although today that is not the case CPU will still detect disconnection and on the next connection it will run through the ID of the device and try to use the existing driver and if peripheral was connected in other USB port, it will install the same driver but connect it to the new USB port.

This type of reconnection can slow down work and place unnecessary load on the CPU so that is why KVM will fake connection in order to make switching externals on the computer smooth and in nick of a time.

Modern KVM switch

These days modern KVM switches will offer you more options than just being able to switch between keyboard, mouse, and monitor. Modern switches now offer Lan, audio, and many more various options.

There are also different kinds of switches offering you only one option, like for example just a Video switch that will let you use one monitor on three computers and many more other specialized options.

Software switches

So far we talked about Hardware switches, a real device being able to take peripherals into it and switch computers on the fly. On the other line, we have software switch solutions that will have specific software installed on all computers and have it run at all times, and switching between them will be through specific software.

There are two very good and main advantages of using software solutions instead of a hardware one. First, of course, is the price, since the most popular Synergy is an open-source solution, completely free of charge. The second big advantage is that software switch is not limited to how many computers can you use. Hardware switches tend to go to a large number like 16 but if you have a large cluster of computers over a LAN, let's say 30 then the box solution might be difficult.

On the other hand software solution will switch only keyboard and mouse since each other computer will have to have some screen on it in order to work. Both solutions have their strong advantages and disadvantages and it is up to you to choose one that best suits you.

Conclusion

If you are multitasking with a lot of computers or just need your peripherals from time to time to connect to another machine then the KVM switch is something that you might find the use of. Just be aware that if you go for some cheap switch you might experience some lag on your peripherals, but if that is not a concern you can get hardware one for as low as $50 USD.

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Fix Err_Connection_Closed in Windows
If you suddenly encounter an error message that says, “This webpage is not available, Err_Connection_Closed” while browsing the internet or visiting a website and the website fails to load, then it means that there is some problem with your network connection. Similarly, you may also get other error messages like “Err_Network_Changed”, “Err_Connection_Reset” and “Err_Internet_Disconnected” errors in different browsers like Chrome, Firefox, and Edge. The problem lies in your Windows 10 computer and your internet connection since this is a network issue. So before you troubleshoot the problem using the suggestions given below, you need to refresh your browser first or you could also tap Ctrl + F5 on your keyboard to hard reload the webpage. If you’re still getting the same error message, then proceed to the guide below.

Option 1 – Try removing the Proxy

Removing the Proxy might also help you in fixing the “This webpage is not available, Err_Connection_Closed” error. Here’s how you can do it:
  • Tap the Win + R keys to open the Run dialog box.
  • Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
  • After that, go to the Connections tab and select the LAN settings.
  • From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
  • Now click the OK and the Apply buttons.
  • Restart your PC.
Note: If you are using a third-party proxy service, you have to disable it.

Option 2 – Try using Google Public DNS

If the first option didn’t resolve the issue, you can try to use the Public DNS by Google and see if it can help fix the problem. You have to modify the DNS settings in your system explicitly and use the DNS IP addresses.
  • The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
  • Next, click on the “Change Adapter Settings” option.
  • After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
  • Right-click on your network connection and click on Properties.
  • Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
  • After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
  • Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 3 – Reset Winsock, TCP/IP & Flush DNS

Resetting Winsock, TCP/IP, and flushing DNS might help you resolve the Err_Connection_Closed error. To do so, follow these steps:
  • Right-click on the Start button and click on Command Prompt (administrator) so you can pull up an elevated Command Prompt.
  • After that, execute each one of the commands listed below. And after you typed in one after the other, you have to hit Enter.
  1. netsh winsock reset – type in this command to reset Winsock
  2. netsh int ip reset resettcpip.txt – type in this command to reset TCP/IP
  3. ipconfig /flushdns – type in this command to flush the DNS cache
  • Next, restart your PC and check if the problem’s fixed.

Option 4 – Disable both the Antivirus program and Firewall temporarily

There are times when antivirus programs and the firewall blocks a website that they consider to be malicious or even because of false-positive effects which is why you have to disable these programs temporarily as it might be the reason why you’re getting the “This webpage is not available, Err_Connection_Closed” error when trying to browse the internet.

Option 5 – Try to check the network cables and then restart your router

The most obvious thing you can do first is to try checking if the network cables connected to your computer or router are properly connected or not. If it turns out that some network cables are not connected properly, then it’s probably why you’re getting this error.

Option 6 –Try a Network Reset

When all else fails, you might have to consider resetting your entire network settings. Simply follow the steps below to do so.
  • Click on the Start button and then click on the gear-like icon for Settings to open it.
  • Next, select Network and Internet.
  • Then scroll down and look for “Network Reset” – click on it and then click on the Reset now button.
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