Can Anyone Explain This 'Fix' ?

[Dougal 165]

I have the issue outlined in this video which crops up often.

Can anyone explain exactly what this 'fix' actually does, as the guy doesn't really explain it very well.

https://www.youtube.com/watch?v=3za5fsfYftQ&t=141s

[bobbyjack 61]

If your computer won't start properly, This is one of the ways to get to a place where you can try to fix it.

CHKDSK repairs disc errors, and sfc /scannow searches for for damages operating system files and replaces them with good copies. Usually one or both of those take care of the problem. If The system file checker can't fix the problem that might mean you have a bad drive. That's what happened to me once. The computer mostly worked except for little annoying things. Running chkdsk and sfc, and even reinstalling windows didn't help. Replacing the HDD did the trick.