How to Fix the AVFoundationCF.dll Error on Your PC

By default inside Windows 11 in File Explorer, once the file is selected, the small check box will appear beside it on left indicating visually that the file is selected. Older users will remember this feature from old Windows Vista and the feature itself is great if you are on some sort of touch device and need to select multiple files. However, if you are working on a computer with a keyboard and mouse this feature might annoy you and seem like something that is not needed. Like many things inside Windows 11 this feature also can be customized and turned OFF if you do not want it. In this guide, we will see how to turn these boxes off. Microsoft has somewhat hidden this feature but luckily it is not difficult to find it if you know where to look.

Turning check boxes OFF

1. Open File Explorer (if you do not have an icon on your Taskbar, right-click on the Start button and select File Explorer from the menu)
2. Click on View on the top toolbar
3. Select Show
4. Uncheck Item Check Boxes

That is everything that needs to be done, after the checkbox is unchecked all check boxes from File Explorer will disappear. If you wish to turn boxes back ON, just follow the steps and check the box beside Item Check Boxes.

When Windows 11 update is available but you do not wish to restart right away because you are in the middle of using a computer, you can schedule a restart for up to 7 days. It is very easy and we will show you how to do it.

1. Press ⊞ WINDOWS + I to open settings
2. Click on Windows Update
3. At the top, under the Restart required to click on Schedule the Restart
4. Click the switch under Schedule a Time to turn it ON
5. Use the Pick a Time and Pick a Day menu to set time and day when you want to update
6. Go back to one screen and visually confirm that the date is set
7. Close the settings

The scheduled restart will be confirmed in a message on the Windows Update page.

BIOS is software that is running in a chip located on your motherboard, you can enter BIOS usually by hitting DEL once the computer is turned ON but this sometimes varies and it depends solely on the motherboard manufacturer. Inside BIOS you can configure your computer components and set up some other important things including passwords for BIOS itself or for the entire system. Password itself is meant to protect access to BIOS from other non-technical users or to prevent access to the system from other people if for example computer is in one household and you would like to be the only one having access to it. However, passwords can be forgotten, and sometimes you can even purchase a second-hand computer with a password on it. In this guide, we will lead you through ways on how to remove your BIOS password so you can regain access to your BIOS settings.

1. Use Manufacturers master password

   Most motherboard manufacturers have built-in a couple of master passwords for BIOS access. If your motherboard has one you can easily find it on the manufacturer's website. Use the master password and remove other passwords inside BIOS, save and exit.

2. Remove CMOS battery

   If you could not find the manufacturer's master password or your motherboard model does not have one remove the CMOS battery to reset BIOS. Note that this method will reset the whole BIOS not only the password. Open on side of your computer casing and locate the round battery on it, do not worry, there is only one battery so you can not make mistake. Remove the battery and leave it outside for around 20 to 30 minutes then place it back as it was, CMOS is reset now and you can access BIOS.

3. Reset BIOS via jumper

   If you want to remove only the password and do not touch other BIOS setting you can locate the BIOS password reset jumper. How the location of this jumper and position is different from the motherboard to motherboard we can not cover them all here and it is advisable to read the manual or find information on the official manufacturer's website.

If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.

If your IP address expires, you will most likely experience interruptions when browsing the web. In such cases, you have to release and renew the IP address by executing the following commands:

• ipconfig /release
• ipconfig /renew

So if you are trying to renew the IP address of your Windows 10 computer using the commands given above but you encounter an error message instead that says, “Unable to contact your DHCP Server”, then you’ve come to the right place as this post will guide you in fixing this error. This kind of error indicates that the NIC can’t communicate with the DHCP server which is why it’s not able to release new IP addresses. It could be due to many reasons. To fix this error, you can try to roll back, update or reinstall the Network Adapter drivers. You could also run the built-in Network Adapter troubleshooter, as well as start or restart the DHCP client service.

Option 1 – Try to rollback your Network driver

If you have updated the driver software as of late and you suddenly got this 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 rolling back to the previous version of the Network adapter drivers didn’t help, then you need to update them instead. 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 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 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 – Run the Network Adapter troubleshooter

Running the built-in Network Adapter troubleshooter can also help in fixing the “Unable to contact your DHCP Server” error. To run the Network Adapter Troubleshooter, refer to these steps:

• Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
• Next, scroll down and select the “Network Adapter” option from the right pane.
• Then click on the Run Troubleshooter” button.
• After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.
• Restart your computer.

Option 4 – Try disabling the IPv6 in the Network Center

• Tap the Win + X key combination and click on Network Connections.
• This will open the Settings app on a specific page. Now on the right-side panel, click on the Network and Sharing Center link.
• After that, it will open the Control Panel and from there, click on the network that your computer is connected to and then click on Properties.
• Next, uncheck the entry that says, “Internet Protocol Version 6 (TCP/IPv6)” in the list that populates.
• Now click on OK and close all other windows.
• Restart your computer and see if the error is now fixed.

Option 5 – Start or restart the DHCP client service

If the DHCP client service is either inactive or stopped, you can try to start or restart it to resolve the error. You can do this via the Services Manager.

• Tap the Win + R keys to open the Run utility.
• Then type “services.msc” in the field and tap Enter or click OK to open the Services Manager.
• After that, look for the DHCP client service from the list of services displayed.
• Once you found it, right-click on it and select the Start or Restart option.

DRIVER_IRQL_NOT_LESS_OR_EQUAL will cause your computer to go to the blue screen of death but do not worry there are solutions around this and we are here to instruct you on how to solve this.

1.  Uninstall and install network drivers

   DRIVER_IRQL_NOT_LESS_OR_EQUAL is most commonly tied to bad network drivers, whatever that be a corruption of the driver files or their incompatibility. So first thing is to check if this is the case. Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Device Manager. In the Device Manager expand Network adapters, choose adapter, right-click on it and choose Uninstall. Install latest driver or reboot so Windows will install the driver automatically

2. Update driver

   If you do not want to reinstall the driver or you are unable to for whatever reason updating the driver might do the trick. To update driver: Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Device Manager. In the Device Manager expand Network adapters, choose adapter, right-click on it and choose Update Driver.

3. Fix via Command prompt

   If both of the beforementioned solutions fail, try running the command prompt and fix the issue from there. Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Command Prompt (administrator) In command prompt type next line and press ENTERDEL /F /S /Q /A “C:\Windows\System32\drivers\mfewfpk.sys Reboot the system

4. Scan your PC for malware

   Sometimes corruption in the system is caused by malware, Scan your system for malware, viruses, etc.

5. Check connections or other hardware issues

   If all methods fail, open your PC case and check to see if connections everywhere are properly connected and tight. Clean your PC and turn it back ON

6. Use system restore

   If anything fails, use Windows system restore and bring back computer into a state where everything was working fine.

Windows 11 brought with it a simplified right-click menu that has limited options. If you would like to bring the old Windows 10 right-click menu you will have to do some registry tweaking but it is doable. Since this requires registry tweak, please follow given solution step by step

1. Press Start and type RegEdit
2. Click on Registry Editor
3. Inside registry editor find next key: Computer\H_KEY_CURRENT_USER\SOFTWARE\CLASSES\CLSID\
4. Right click in the right part of editor window and select New > Key
5. Type in as a name: {86ca1aa0-34aa-4e8b-a509-50c905bae2a2}
6. Right click on {86ca1aa0-34aa-4e8b-a509-50c905bae2a2} key and select New > Key again to create new key inside this one
7. Name inside key InprocServer32
8. Double click the “(Default)” key in InprocServer32 to open it
9. When the Default key opens close it without making any changes by clicking on OK. This will make its value property Blank instead of value not set
10. Close Registry Editor
11. Restart your PC

Once the system is up if the followed solution is applied you will now have an old school menu once right-click is used.

If you were trying to copy, move modify or delete a folder or a file in your computer but you’re not able to do so and encountered an error instead that says, “Could not find this item, This is no longer located in <path>, Verify the item’s location and try again”, then you’ve come to the right place as this post will guide you on how you can fix this error. You can encounter this error when you delete, rename, open or copy a certain file which is often created by third-party software and lacks important information like file format, and so on. Although you can see these files in File Explorer, you might not be able to perform some operations in them. To fix this problem, you need to check out the given suggestions below.

Option 1 – Try to rename the file via Command Prompt

If you were trying to rename the file but unable to do so, you can achieve that by executing a command in Command Prompt. Make sure to follow the steps carefully.

• Type in “Command Prompt” In the Start menu to search for it or you could also click the search button right next to the Start menu and then right-click on the related result and select the option “Run as administrator” to open Command Prompt with admin privileges.
• Next, type in “cd” followed by the path where the file is located with this format – “C:/Folder1/Folder2/Folder3”. However, you have to omit the problematic file this time. To put it simply, the last folder in the command must be the folder where the file is located.
• After inputting the command, press Enter on your keyboard and then use the set of commands given below. Note that each command is a new line so you need to tap Enter after copying each line.
  • DIR /A /X /P
  • RENAME (the current name of the problematic file) (a non-problematic name)
  • EXIT

Note: Make sure that you only input the current name and the new name separated by a space. You must not write the brackets in the command. If everything goes well, you will now be able to operate the file like you used to before.

Option 2 – Try to delete the file using Command Prompt

On the other hand, if you were trying to delete the file instead of renaming it, you can execute another command in Command Prompt.

• Open Command Prompt with admin privileges like what you did earlier.
• Once you’ve opened Command Prompt, copy and paste the command given below and tap Entre after you do so. You also have to make sure that you key in the correct path where the file is located as well as its name.

rd /s \?X:badfolderpath

Note: In the command above, “X” is the placeholder letter so you must input the letter that corresponds to the drive’s letter where the file is located.

• After that, you will see the “Operation completed successfully” message on your screen. If you don’t, check if you’ve really inputted the correct location of the file or its name.

Option 3 – Delete the file without any extension

If the file you were trying to delete does not have an extension, this means that Windows does not know what to do with this file which is why it’s throwing an error message. The best thing to do in such cases is to delete the file especially if it takes up a lot of memory. To delete these kinds of files, here’s what you have to do:

• Follow the first two steps from the previous option above so you can navigate to the location of the file accurately just be careful in inputting the folders.
• Don’t forget to tap Enter right after each command and then use the next command below so you can delete the affected file which has no extension:

del *.*

• After you’re done, open the File Explorer and then check if the file is now deleted or not.

Virtual Reality is slowly becoming standard in gaming. More and more affordable headsets are coming out lowering entry prices and making them affordable for all. But in a sea of new VR headsets, it is important to at least purchase a decent one that will perform nicely and hopefully last longer. Therefore in today’s article, we will address some of the best options currently available on the market,

Oculus Quest 2

With its Rift model, Oculus set itself as a big player in VR. Now the company is slowly bowing out of the dedicated, tethered VR headset with its latest Quest 2 designed to primarily be a standalone headset. In case you do not know, tethered headset means that the headset itself is connected to your PC and is using its power to drive your VR experience. Now technical specifications of Quest 2 are pretty OK and it can drive stuff pretty decently and if you want you can purchase the dedicated cable to connect it to your PC for the full experience of games requiring more capable hardware. Oculus Quest 2 is the cheapest headset on this list and with its stable performance, is highly recommended.

Valve Index VR

Although the headset itself is nothing revolutionary or special its controllers are. They can track individual finger movements, making games (that take advantage of them) much more immersive than the standard trigger grips on other controllers. The Index's higher refresh rate makes for smoother action, as well, which is another nice bonus. If you already have an HTC Vive or Vive Cosmos Elite, and their base stations (not the regular Cosmos), you can buy only the controllers.

Sony PlayStation VR

The PlayStation VR is compelling thanks to Sony backing its development, plus the PlayStation 4's affordability and availability compared with gaming PCs. All you need is the headset, a PlayStation 4, and a PlayStation Camera (now included with most PlayStation VR bundles). Not really the best of the bunch but still one of the top ones for console gaming. Sony is working on a new PlayStation VR system for the PlayStation 5, with redesigned controllers. The new headset hasn't been revealed yet, but the company has released a preview of the new controllers.

HP Reverb G2 VR

HP headset is one which you get if you want the best image quality in VR headset, sadly controllers did not follow the same quality of headset itself. But this is still a pretty decent headset overall and worth the purchase.

HTC Vive Cosmos

HTC's Vive Cosmos is the upgraded version of the Vive. It features a higher resolution and replaces the external base stations with outward-facing cameras for motion tracking. It's a comprehensive package for whole-room VR. HTC recently released the Vive Pro 2, a high-end VR headset targeting both enterprise users and consumers. This new headset features a 2,448-by-2,448 resolution display for each eye, making it the highest-resolution headset currently available. It's also more expensive than the Cosmos Elite. Sadly one thing that is bringing this headset down is the price.

There are cases when you want to undo some changes you’ve made to your computer and to do that you have to perform the System Restore task. However, if you encounter an error that states “To use System Restore you must specify which Windows installation to restore”, when doing so, read on as this post will help you fix the problem. This kind of error in System Restore could be due to corrupted files in the system. There are also situations where you are not able to boot up once you encounter this error which could be a big problem. On the other hand, this error might have something to do with corrupted BCD files. Whatever the cause is, here are some potential fixes you have to try.

Option 1 – Try to run System File Checker offline

Like pointed out, since the error might be due to corrupted system files, you can try to run System File Checker offline. How? Refer to these steps:

• You need to go to the Advanced Startup Options and from there select Troubleshoot.
• Next, select the Advanced Options and then Command Prompt.
• After opening Command Prompt, type the commands given below and tap Enter right after you type each one of them.
  • Cd /
  • Dir

• If you can see the “Users” folder, that is your system’s drive. However, if you can’t see it, you can just change the drive-by assigning “D” as its alphabet volume.
• Then execute this command where “C” is the system drive: sfc /scannow /offbootdir=C: /offwindir=C:Windows
• Now repeat the given steps sequentially.

Option 2 – Try to run DISM tool

You can also run the DISM tool to repair the potentially corrupted system image. First, you have to check the health of the system like checking the integrity of the system files and Windows services. To run DISM, follow the given steps below sequentially.

• Open Command Prompt from the Advanced Startup options.
• After that, execute this command where “C:” is the system volume: DISM /Image:C:Windows /Cleanup-Image /RestoreHealth /Source:C:WindowsWinSxS
• If you encounter an error after executing the given command, insert the Windows USB or DVD and then execute this next command where “E:” is the USB or DVD drive: DISM /Image:C:Windows /Cleanup-Image /RestoreHealth /Source:esd:E:SourcesInstall.esd:1 /limitaccess
• In some cases, “install.esd” would be “install.wim” and in such case, you have to modify and execute this command: DISM /Image:C:Windows /Cleanup-Image /RestoreHealth /Source:wim:E:SourcesInstall.wim /limitaccess

Option 3 – Try to repair corrupted BCD

As mentioned, the error could also be due to corruption in BCD, and to fix it, you can use Bootrec.exe – a built-in command-line tool used to troubleshot issues related to boot up and Windows Startup. Before you run this tool, make sure that you have inserted a bootable USB or DVD into your computer. Once you have that covered, follow these steps:

• You need to go to the Advanced Startup Options.
• Then click on Troubleshoot.
• Next, select the Advanced Options and then Command Prompt.
• Once Command Prompt has been pulled up, enter each one of the following commands and in the sequence that they are given to rebuild BCD files and repair MBR files:
  • Bootrec /Fixmbr
  • Bootrec /FixBoot
• After you execute the commands given above, you should see a confirmation message that says, “The operation completed successfully”.
• Now type the “Bootrec /RebuildBCD” command to rebuild BCD.
• Finally, close Command Prompt and then restart your computer to successfully apply the changes made.

Option 4 – Try to run the Automatic Repair Utility

You might also want to use Automatic Repair in fixing the error. To do so, follow the steps below.

• You can start by creating and booting from a bootable Windows 10 USB Stick.
• After that, click on Repair your computer located in the bottom left corner when you are on the initial Windows Startup screen.
• Next, click on Troubleshoot, and then on the other screen, click the Startup Repair option.
• Now select the operating system you want to repair. Once you do that, it will start to repair your operating system. Wait until the process is completed and then check if the problem’s now fixed.

Option 5 – Try to use the Windows Recovery Environment

If the four options given above didn’t help fix the problem, you could try running Windows Repair and a Windows bootable USB or DVD.

• First, insert the bootable USB or DVD and boot into it, and select the “Repair your computer” option.
• Next, once you see the manufacturer logo on your computer, tap the key to enter into Windows Recovery Environment.
• After that, change the Boot sequence to DVD drive under the UEFI Firmware settings and restart your computer.
• Once your computer has restarted, select the boot order and make changes accordingly as displayed in the BIOS.

Option 6 – Try running System Restore in Advanced Startup Options

Since you probably can’t boot into your Windows 10 computer, you can try to run System Restore again in the Advanced Startup Options.

• Boot your computer into the Advanced Startup Options screen.
• From there, you will see some options to troubleshoot when you can’t log in to Windows in the usual way.
• Now select Troubleshoot > Advanced Options > Command Prompt.
• After that, type “exe /OFFLINE:C:Windows” and hit Enter to execute the command which will start the System Restore process.

Note: You need to replace “C” with the drive where Windows Installation is located.

If you encounter an error message saying, “ERR SSL VERSION OR CIPHER MISMATCH” while visiting a website, then it is not primarily your fault as an end-user. In fact, it can happen on any website like Chrome, Edge, Firefox, and even Internet Explorer. Getting this error means that the website you are visiting is using an SSL certificate which your browser seems to be rejected because there is some issue with the certificate. It is also possible that the certificate that’s downloaded on your computer is corrupted or that your computer configuration for TSL/SSL is misconfigured. Here are the complete details of the error message:

“A secure connection cannot be established because this site uses an unsupported protocol, Error code ERR_SSL_VERSION_OR_CIPHER_MISMATCH”

To resolve the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error, refer to the options given below and see which one works for you.

Option 1 – Try to access the website with the only HTTP

The first thing you can do is to try accessing the website using HTTP instead of HTTPS. If you can open the website using HTTP then it means that the problem is in the website itself. And if you are the website owner, you can check the following:

• Check if your website’s SSL certificate name is mismatched. Here you need to ensure that the name and alias of the websites match with the actual website URL where the certificate is installed.
• Second, check if your server is using the RC4 Cipher. If it is, then you need to fix that.

On the other hand, you may also check if your CDN also supports SSL since most of the CDN nowadays supports SSL. All you have to do is configure it correctly and it should be good to go.

Option 2 – Try enabling SSL 3 / TLS and disable QUIC Protocol

If you were using Google Chrome when you got the ERR SSL VERSION OR CIPHER MISMATCH error, then you need to follow the protocol fixes for SSL3/TLS and QUIC which are usually some of the reasons that cause the SSL version / Cipher Mismatch. It also has a few fixes for Windows 10 computer where you can clear the certificates and make sure that your computer date and time is in sync with your time zone and so on. If you were using Edge or Internet Explorer when you got the error, then you have to follow the steps below.

• Type “Internet” in the search box of your browser. After that, you should see the Internet Options from the search results.
• Next, open the Internet Properties window and switch to the Advanced tab and then scroll down to the Security section.
• From there, check the “Use TLS 1.1” checkbox as well as the “Use TLS 1.2” checkbox and then click OK to save the changes made.
• Restart the browser.

On the other hand, if you were using Firefox when you go the error, here’s what you have to do.

• Open Firefox and in the address bar, type “about:config” and hit Enter.
• If a warning appears, just click on the “I accept the risk!” button to proceed.
• Next, type in “TLS” in the search field and hit Enter.
• Then look for “security.tls.version.min” and double click on it and set its integer value to 3 to force the protocol of TLS 1.3.
• Now click OK and restart Firefox and do the same thing with SSL.