It's either a failing hard drive, or corrupt data coming in from failing RAM. Most likely is hard drive, but you can test the RAM using a free program called memtest86 available online. To avoid using the hard drive you'd want to boot the memtest from a USB thumbdrive, or from a CD.
Next thing is to run chkdsk /r/f on the drive, then check the Events area and see what it put there as the results of that. What you are looking for is it finding "bad sectors" or failed sectors.
At the start I'd like to sorry for all the language mistakes.
Today I've got some problems running my computer. At the begging, Windows didn't want to update - "failed to update". I am running old version right now. Next, I couldn't run my web browser, Mozilla Firefox, because there was an error "File KERNEL32.dll is missing". I resinstalled the browser, and it's working now. Finnaly, a horrible thing happened. A game, Mad Max, crushed 2 times, because of some errors (it never happened before). Unfortunatelly, I don't remember why (the error messages), but I can remember, that it was related to virus.
Now, why am I writing about it here? Because it affects Windows. Badly - windows update, black screens while running such things as Windows searching. I can't search for the Virus with Avast, because I have pretty slow computer, and after 30 minutes of scanning, there was no progress, fast scanning doesn't detect anything (Fast scanning finished in 1 minute, and I was pretty suprised with that, because it's much faster than compared to other users, and slow scanning is much slower than compared to other users). I can't run Windows Defender as well. I ran CMD scanning (command sfc /scannow), and there's link to CBS.log file.
It has a plenty of DIRSD owner warnings - I read about them, and they don't appear to be serious errors, but from the other side I read about KERNEL32.dll (the Mozilla running error), and they are probably related.
What is going on? What should I do?