One of the Win10 computers in my office failed to boot yesterday, so I went in to work on it.
During boot it got to a screen that offered two options: Restart PC, and Advanced Options with a bunch of recovery options. None of the tools were able to run.
I also used Dell diagnostics, which didn't find any problems with the hardware or drive partitions.
It took me about an hour, but I was finally able to restore the drive to a 'Last Known Good' state, and get it to boot normally.
I ran SFC /scannow which found and fixed some corrupted files. So it looks like somehow some Windows system files got messed up.
I also optimized the drive, which hadn't run for 32 days (it's on a weekly schedule.) I ran CHKDSK on a reboot, which just did whatever it does.
I noticed that the C: drive icon in 'My PC' has a yellow triangle with an exclamation point. My understanding is that this could be caused by a lot of different things, one of which is that BitLocker is not running.
I don't enable BitLocker on any of our PC's, and I haven't seen that icon appear on any of the others.
Would it be wise to clone that drive to a new NVMe drive and replace it?
The computer is only about a year old.