Fix The default gateway is not available Error

Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:

• The incompatible third-party program
• Hard disk issues
• Service pack installation has failed
• Mismatched system files have been installed
• Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:

• Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.

• Repair and Restore the Registry

This procedure is slightly long and tricky. To try it, you need to be technically sound. Here’s what you have to do: first create a parallel installation of Windows NT. Start your PC to the parallel installation and then open the Registry Editor. On the Registry Editor’s Windows menu click HKEY_LOCAL_MACHINE on Local Machine and then click Load Hive. Now type the path %systemroot%system32configsystem into the System hive of the prior installation. Then click open. Here you will be prompted to enter the name of the key, type TEST. Note the setting for the current DWord value in the preceding registry key. This is 0x1 and is denoted by CURRENT:Reg_Dword: 0x1. This value indicated that the Current Control Set for your original Windows NT installation corresponds to ControlSet001 in this window. Now if the value is 2, it indicated that the Current Control Set corresponds to ControlSet002. Now locate the following registry key: HKEY_LOCAL_MACHINETESTControlSetXXXControlSession Manager. XXX is the Current Control Set Value. And delete any pending file rename operation entries. Then click TEST hive and then click Unload Hive. After that again repeat the process, open the registry menu and click load hive, here type the path %systemroot%system32configSoftware to the Software hive of the prior installation and then click open. Now you type TEST 2 when you are prompted for the name of the key. Remove any pending file rename operations entries in the following registry keys: HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnce HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnceEx Now click TEST2 hive and then click unload hive. Quit the Registry Editor and then restart your original installation. This will resolve the stop C000021A error.

Error 0x00000643 - What is it?

This is a Windows Vista printer error. It occurs when you try to use the plug-and-play service to install a WSD printer on your PC. WSD is the abbreviation for Web Services for Devices. It is a Microsoft API to simply programming connections to web service enabled devices such as printers, file shares and scanners.  The error 0x00000643 code is displayed in the following format:

“Operation could not be completed (error 0x00000643)”

Solution

Error Causes

The error 0x00000643 may occur due to multiple reasons, including:

• No suitable driver installed for your printer
• A firewall or other security program is too restrictive
• Registry file has invalid entries
• Virus and Trojan
• Outdated system drivers

Further Information and Manual Repair

To resolve this error code on your PC, you don’t have to hire a professional technician and spend hundreds of dollars to perform system repair. You can resolve it all by yourself, even if you are not a computer programmer or lack technical expertise. Here are some of the easiest and proven methods to fix the error 0x00000643 on your PC:

1. Update Outdated Drivers

This can be done by accessing the ‘Device Manager’. All you have to do is, go to the start menu and type Device Manager in the start search box. Then click on the Device Manager in the list. On the action menu, click the scan for hardware changes or update the driver.

2. Delete the WSD Port to Resolve Error

Go to the start menu and type printers in the search box. Click printers in the given program list and then click the option add a new printer. After that, select the existing WSD port and any printer driver. Now delete the printer. The WSD will be deleted automatically. Once this is done, connect the printer to your computer. You will see the plug-and-play service will begin to install the printer again. This process is most likely to resolve the issue and reinstall your printer.

3. Disable Firewall

Sometimes the error may occur if the security programs are too restrictive such as the Firewall. To fix the problem simply disable Firewall.

4. Viral Infection

If the underlying cause of the error is a viral infection, then download a powerful antivirus and run it on your PC. Scan for viruses and delete them.

5. Registry Invalid Entries

If you don’t clean the registry regularly, this overloads with unnecessary, redundant and obsolete files like cookies, internet history, junk files, bad registry keys and invalid entries. This damages the registry and generates such error codes. Although you can resolve and repair the registry manually, but that method is slight tricky and time consuming. It may require technical expertise. However, another quick and easy way to clean and restore the registry and resolve error 0x00000643 on your system is to download Restoro. This is a next-generation, advanced, and highly functional PC Repair Tool. It is deployed with an intuitive algorithm and multiple utilities such as a smart registry cleaner, a powerful antivirus, and a system optimizer. The registry cleaning utility detects all registry issues on your PC, removes invalid entries cluttering the registry, and repairs it right away thereby resolving error 0x00000643. The antivirus simultaneously detects malware on your PC and removes them while the system optimizer boosts the speed of your computer significantly. Restoro is bug-free, safe, and efficient. It has simple navigations and a user-friendly interface. This software is compatible with all Windows versions including Vista. To fix error 0x00000643 on your system in seconds, click here to download Restoro now!

If you continuously encountered the “VirtualBox FATAL: No bootable medium found, System halted” error when you try to install Windows 10 in VirtualBox, read on as this post will give you some potential fixes to resolve the problem – you will be guided on how to choose the ISO image to fix this error in VirtualBox. This kind of error is a very common one especially if you have a corrupted ISO file or if you have not selected an ISO file for your virtual machine. Like pointed out, this error pops up when you have a corrupted ISO file or if the ISO file is not attached to the virtual machine. You have to select the ISO file while you create the virtual hard disk, else, you will most likely face this problem, and to fix it, you need to download fresh Windows ISO, create a new IDE Controller, assign Windows ISO to the IDE Controller and then boot your virtual machine. For detailed steps, follow the instructions below but before you start, make sure that you have a valid and uncorrupted Windows ISO. Step 1: First, you need to open the VirtualBox program on your computer and select the virtual machine. Step 2: Next, click on the Settings button or you can also right-click on the virtual machine and select Settings from the context menu. Step 3: Once you’re in the Settings panel, go to the Storage section and from there, create a Controller: IDE. Step 4: To create a Controller: IDE, click the Add new storage controller icon and select the “Add IDE Controller” option. Step 5: After that, click the Add optical drive icon and click on the Choose disk button. You will then see all the attached and non-attached ISO files. However, you have to add the new ISO file that you just downloaded. Step 6: To add the new ISO file, click the Add button and select the ISO file and then select the .iso file from the Non Attached section. Step 7: Now click the Choose button and afterward, make a checkmark in the Live CD/DVD checkbox and then select the IDE Primary Master from the drop-down menu of the Optical Drive. Step 8: Once you’re done, save the changes made and try booting into your virtual machine again.

Photoviewer.dll Error - What is it?

Photoviewer.dll is a shared library for SampleRes.dll and x3daudio1_1.dll in computers installed with Microsoft Windows 7, 8, Vista, and XP including 32 bit and 64 bit operating systems. Photoviewer.dll is associated with 1728000 system files. The Photoviewer.dll error occurs when you upgrade your Windows operating system to a new version like Windows 7 or 8 on which this shared library is used. Once you upgrade the Windows and you right-click on JPG images, the Photoviewer.dll error pops up. This error message is displayed as the following:

1. Photoviewer.dll missing/not found
2. Photovewer.dll entry point not found/application can’t initiate

Solution

Error Causes

Photoviewer.dll error can pop up due to several reasons. These include:

• Modification of .dll files during Windows installation
• Infection of Trojan virus
• Photoviewer.dll missing /broken
• Photo Gallery was earlier your default image editor before you upgraded your system

It is advisable to repair this issue timely to avoid inconvenience and serious PC threats especially if the cause of this issue is viral infection or registry damage.

Further Information and Manual Repair

Here are some of the best ways to help you resolve Photoviewer.dll error on your system:

1. Rebuild the Windows Photo Gallery

If you were previously using Vista and then you upgraded your system to Windows 7, then try this:

• Go to the Start menu, click on the control panel and go to the folder options.
• Then select the view tab option. Here you’ll find the Advanced setting window, select the show hidden files and folders tab.
• Now click Ok to continue. Navigate to the following folder( %user% is the name of the account with the problem) C:\Usersusername\AppData\Local\Microsoft\Windows\Photo Gallery.
• Then copy files to another location as a backup and delete them from the Windows Photo directory. Once the files have been deleted, try to start Windows Photo Gallery again. If this seems difficult, install Windows Photo Gallery application from the internet on your system.

2. Repair Broken Photoviewer.dll files and Remove Malware

Another way to fix the photoviewer.dll error is to download Restoro. This is an advanced, user-friendly, and multi-functional PC fixer smoothly integrated with a registry cleaner. By running it on your system you can resolve all Photoviewer.dll error causes in seconds. Restoro has an easy-to-use interface and a neat layout. It is safe, efficient, and bug-free. In addition to this, it is compatible with all Windows versions. The registry cleaning utility is deployed with an automated algorithm that scans your entire PC and detects Photoviewer.dll file errors in seconds. It fixes damaged, misconfigured, and broken Photoviewer.dll files, clears up disk space from unnecessary and obsolete files like the files from the uninstalled Windows programs which could be generating Photoviewer.dll error on your system. It repairs the registry and modifies the registry keys to their correct configuration thus repairing the Photoviewer.dll error on your PC. The powerful privacy error detector is integrated with all the properties and characteristics of an anti-virus. It scans for malware and viruses like Trojans and removes them from your system right away. Besides these utilities, other features integrated into this repair tool include a system stability scanner and Active X and class error detector. It resolves Photoviewer.dll error while optimizing your computer’s speed and performance. Click here to download Total System Care on your system to resolve the Photoviewer.dll file error today!

Recently, a number of Windows 10 users getting an error on their computers that state, “Windows can’t find one of the files in this theme”. According to the affected users, this error occurs at random times even when they didn’t make any changes to their computer’s theme prior to getting the error. If you are one of these users, read on as this post will help you resolve this problem. If you click on the Yes button of the dialog box where the error is displayed, it won’t fix the problem as you will still get the same error from time to time. This kind of error could be caused by the executable file named “SettingSyncHost.exe”. It is possible that this executable file is unable to sync your theme all over your computer. On the other hand, it could also be due to some problems with the active theme. To resolve this issue, you can try to change the active theme, or disable the custom screensaver or disable theme syncing on your computer, as well as run a System File Checker or run the DISM tool. For more instructions, follow the options given below.

Option 1 – Try to change the active theme

The first thing you can do to fix the error is to change the active theme of your computer since the SettingSyncHost.exe file might not be able to properly sync the theme on the computer.

• Go to Settings and click on Personalization.
• Next, click on Themes and scroll down to apply a theme, and change the theme of the operating system.
• After that, tap the Win + R keys to open the Run dialog box and type “%windir%ResourcesThemes” in the field, and then tap Enter to open the folder where the theme files are located.
• Once you’re done, right-click and select delete for the active theme to remove the theme and its resources. This should fix the root cause of the problem. If not you can try to create a new Windows 10 theme and save it.

Option 2 – Try to disable the custom screensaver

The custom screensaver is a part of the mechanism of the lock screen. Although they were needed in the earlier Windows versions to prevent the discoloration of CRT monitor screens, they are no longer needed in the current version of Windows. Thus, you can try to disable it as it could be the one that’s causing the problem.

• Click on the Start button and go to Settings > Personalization > Lock screen.
• Here, scroll down and click on the Screen Saver settings.
• After that, select the “Screen saver to (None)” option from the drop-down menu. This will disable the custom screensaver.

Option 3 – Try to disable theme syncing on your computer

You could also try to disable the theme sync feature to fix the problem. This has worked out for some users. To do so, follow these steps:

• Click on the Start button and go to Settings > Account > Sync your settings.
• From there, toggle off Themes in the individual sync settings column. This will disable the Theme syncing.
• Restart your computer and see if the problem is now fixed.

Option 4 – Run the DISM tool

The next thing you can do is run the DISM tool. This tool is known to repair potentially corrupted files in your system as having them could also system issues like the “Windows can’t find one of the files in this theme” error. To repair these corrupted system files, you can run the DISM commands:

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

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

Option 5 – Run the System File Checker

System File Checker or 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 that might be the cause why you’re getting the “Windows can’t find one of the files in this theme” error. To run the SFC command, follow the steps given below.

• Type “cmd” in the Start search and then right-click on the appropriate search result.
• Next, select “Run as administrator” to open Command Prompt with admin privileges.
• 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.

• Now restart your computer and see if the problem is fixed or not.

If you suddenly noticed that your Onscreen keyboard in Windows 10 has become completely white or transparent for some reason, then you’ve come to the right place as this post will guide you on what you can do to resolve this kind of issue in your computer. As you know, the on-screen keyboard is included in Windows 10 and has an executable file named “osk.exe”. The on-screen keyboard is a part of the Ease of Access feature in Windows 10 which allows users to navigate the computer with the help of the mouse instead of the physical keyboard. However, there are times when you might encounter some issues when using the on-screen keyboard. One of the issues reported recently is that the on-screen keyboard becomes transparent or it only displays the borders but there is no way for you to access it. You also won’t be able to move it from the view completely. To fix this problem, there are several suggestions you can check out. You can try to check the Fade button or run the Windows Touch Keyboard troubleshooter. You can also restart its process in the Task Manager. For more details, refer to each one of the given options below.

Option 1 – Try to check the Fade button

The first thing you can do is to check the Fade button on the on-screen keyboard. You can find it at the bottom right corner of the keyboard. If it is enabled, then it’s probably the reason why your on-screen keyboard is transparent as it lets it fade in the background. Thus, you have to disable it to resolve the problem.

Option 2 – Try to run the Windows Touch Keyboard troubleshooter

The next option you can check out is running the Windows Touch Keyboard troubleshooter. This troubleshooter will help you identify the problem and would fix them automatically.

Option 3 – Try to restart the process of the on-screen keyboard via Task Manager

The next thing you can do is to restart the on-screen keyboard’s process in the Task Manager. Just follow the steps below.

• First, tap the Ctrl + Shift + Esc keys to open the Task Manager.
• Next, go to the Processes tab and look for the option that says, “Accessibility On-screen Keyboard”.
• Once you found it, click on the drop-down arrow next to it and right click on the “On-screen Keyboard” option, and select End task to end its process.
• After that, tap the Win + R keys to launch the Run utility and type “osk.exe” in the field, and then hit Enter to open the on-screen keyboard.

Sometimes we need and want some apps that are not part of the official Amazon Appstore but having their Fire TV stick prevents us from installing anything that's not in their store, or does it?

You can quickly "jailbreak" given stick and unlock additional installations via different providers. Although the term jailbreaking is associated with illegal and hacker activities rest assured that in this case there is nothing illegal about this procedure and that you are entirely safe.

Jailbreaking process

In order to do this procedure firstly you will have to allow the installation of apps obtained from outside the Amazon Appstore. To do this open the settings menu on your Fire TV Stick and inside settings choose My Fire TV. On the My Fire TV page select Developer Options and inside select Apps From Unknown Sources. The prompt screen will open, choose Turn On to activate the option.

APK installation is enabled now and the next step is to download an app like Downloader that will allow you to get your favorite apps. Downloader is free to download manager fully available on the Amazon Appstore and with it, you can download any kind of file to your device including APKs.

Once installed open the Downloader app and type in the URL or search term in order to find your application of choice but please do get all of your APK from trusted sources in order to avoid exploits and getting malware.

As you know, the CHKDSK utility is proven to be one of the useful tools to fix any issues that concerns file system, storage, and disk. However, as useful as it may be, it is still not immune to issues as you could encounter errors when running it. One of these errors is the “One such error is the CHKDSK cannot continue in read-only mode” error. If you receive such an error message while running CHKDSK, then you’ve come to the right place as this post will help you sort the problem out. It is possible that the drive is read-only or that the Write Protection is enabled. It could also be that the drive is already being used and scanned by a different program or utility. To get rid of this error, there are a couple of suggestions you need to check out. You can try to run the CHKDSK utility from Recovery or run it on Boot. You could also try to disable Write Protection. For more detailed steps, follow the given instructions below.

Option 1 – Try to run the CHKDSK utility from Recovery

The first thing you can do to resolve the error in CHKDSK is to run the CHKDSK utility from Recovery. How? Follow these steps:

• First, boot into the installation environment for Windows 10 from a Windows installation media.
• Next, click on the “Repair your computer” option.
• After that, select Troubleshoot > Advanced options > Command Prompt.
• After opening Command Prompt, type this command and tap Enter: chkdsk <Partition Letter>: /r /f
• Wait until the disk error checking process is completed.
• Once it’s done, exit the Command Prompt window and restart your computer and then see if the error is fixed.

Option 2 – Try running the CHKDSK utility on Boot

On the other hand, you can also try to run the CHKDSK utility on Boot so you can fix the error and recover any damaged segments of the drive.

• Open an elevated Command Prompt and enter this command: chkdsk /r
• After that, you will a message that says, “Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)”
• Type Y and tap Enter to schedule a CHKDSK scan once your computer reboots next time.

Option 3 – Try to remove the Write Protection from the drive

As mentioned, removing the Write-Protection on the concerned drive could also help you fix the problem and there are two ways to get rid of the write protection – you can either use the Diskpart utility or the Registry Editor. How? Refer to the following steps.

Via Diskpart utility:

• Open Command Prompt with admin privileges and then type the “diskpart” command and tap Enter to execute it.
• Next, type “list disk” and tap Enter to get the list of all the Disk connects or all the partitions that are formed on those disks.
• After that, you need to choose one command depending on the list of commands you entered. Type “select disk #” and tap Enter to select the disk or partition you want to select.
• Then type “attribute disk clear readonly” and tap Enter to Disable the Write Protection on the selected disk or partition.

Via Registry Editor:

• Tap the Win + R keys to open the Run utility and type “Regedit” in the field and then tap Enter to open the Registry Editor.
• Next, navigate to the following registry key:

ComputerHKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlStorageDevicePolicies

• After that, look for the DWORD named “WriteProtect” and double click on it, and then set its Value Data to “0”.
• Now restart your computer and see if the problem is now fixed or not.

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

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

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

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

Option 2 – Try to update or reinstall the respective drivers

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

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

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

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

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

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

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

Option 4 – Temporarily disable Firewall and third-party antivirus

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

Option 5 – Try to troubleshoot the web browser

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

The number of Hertz is the number of how many images your screen draws in one second. So monitor with a refresh rate of 60Hz will draw 60 images each second on your screen. To most users, this will look fine and enough but actually, if you would place them in front of a 120Hz screen difference will be visible right away.

Benefits of higher refresh rates

In most simple words just looking at a screen that has a higher refresh rate will produce a more natural feel of things, although some people would argue that flickering can not be seen on 60Hz monitors and that should be enough, I would argue that they never watched the movie, played the game or used high refresh rate screen when they can state something like that.

Yes, 60Hz might be enough to look at the web page or read some documents but long exposure to 60Hz can have a tiring effect on the eyes in the long run. 120Hz and above just feel more relaxed and it is far less demanding on the eyes. Watching movies also is much better on a higher refresh screen, with way much less motion blur in fast scenes giving the overall experience a greater natural feel.

Gaming is perhaps an area where a refresh rate of 120Hz and above will show its best. Having a higher refresh rate will be easier on your eyes and can even give you a competitive edge. When for example you have twice more images per second on your screen than your opponent his movement will be more fluid and predictable because of that and overall precision will be much higher when moving the cursor in the game since more frames per second means more precision and smoother movement.

The dark side of high refresh rates

After all the positive things that were said about the advantages of high refresh rates, it is just fair to look at some negatives or in this case only negative one and that is Computer power. As said in the previous section having a 120Hz refresh rate means having 120 frames displayed on the screen per single second. Having even higher monitors like 360Hz means even more frames per second and in order to actually see all of that frames you will need to have enough computer power to back it up. Having for example screen with a refresh rate of 240Hz means nothing if your GPU and rest of the computer are able only to push 150 frames per second, in this case, you will still have 150 frames in one second despite the monitor being able to go to 240.

Conclusion

Generally and with all of my heart I would recommend moving away from 60Hz monitors, yes they are cheaper and more affordable but at the end of the day if you are someone like me who spends most of his daily time in front of the computer you would be grateful to have higher refresh rate screen and save your eyes, and after all, why not enjoy some smoother and better movie and game experience as well as saving your eyesight.