Windows 8 bsod 21a

Answers 6. Best Answers 0. Vote Up 0 Vote Down. This error is normally caused by one of these two files: winlogon. About Sharath Reddy.

Questions 1. Answers Best Answers Related Questions. Disclaimer : All of your settings will be reset. All apps that you installed will be removed.

Only apps that came with your PC will be reinstalled. If you upgraded your PC from previous version of Windows, resetting your PC will restore earlier version. Thank you for the reply but I am unclear on one thing. I understand the repair methods you have outlined and how a folder will be created called old. But it also removes all the application programs I have installed…. On my digital work station I use well-known DAW software which requires an install and then I have to register it with the maker to work.

I had a working machine and after an update it now seems useless, Is windows 10 that picky that a corrupt file cannot be repaired or a new one copied over it? Please be informed that performing start-up repair and rebuild BCD, wont remove any third party applications installed. However if you reset the PC, the third party applications, apps, drivers, personalized settings etc. If you have not performed system restore, you may perform a system restore and check if it helps. System restore : This option takes your PC back to an earlier point in time, called a system restore point.

Restore points are generated when you install a new app, driver, or Windows update, and when you create a restore point manually. Refer to the section Restore from a system restore point in the following article:. Disclaimer : Though it is said that System Restore does not affect your personal information such as email, documents, photos, videos, etc. During System Restore, there may be errors and such errors may cause damage to the files that are present in the system.

And, computer shutdown during restoring process may also lead to file loss. Sometimes when System Restore is failed, it may lead to loss of important files as well. Thanks I thought that was the case. Windows 10 is a monster and this is the second time it has wiped out my computers.

I think Microsoft has lost it's MoJo. Hey Bill, How about a courtesy flush? I was also able to at least login back into my system by disabling driver signature enforcement temporarily.

But is there any permanent means through which this option can be disabled? It is really difficult to each time wait for the Automatic Repair Window to appear and then chosing this option. I have started facing this problem after I got my motherboard replaced in my Acer laptop. It was having original copy of Microsoft Windows 10 Pro installed in it. Thanks Original Title: Win 10 will not boot.

I also looked at the volumes in dispart and it said C: had 0 space, GB allocated. Any ideas? Attachments: Up to 10 attachments including images can be used with a maximum of 3. And if that doesn't work, then use F11 to open the windows menu. Your computer should boot in the Recovery options menu.

Hold F7 to reboot your system, this will start your system with Disable Driver Signature Enforcement disabled and check if the problem is fixed. It could be possible that recently installed hardware or software is incompatible with your operating system. Also , there are many other methods we could use to try. Here is a link with the video to fix error 21a which we could refer to.