I have a friend's laptop in my care at present. 'something' had happened to it, it wouldn't boot and when I tried to fix it through repair with a W10 CD, I got that the disk was locked. I found some instructions for that and followed them and was then able to reset it.
I set it to run chkdsk /r next time it restarted, did a restart and waited. It got stuck on 10% for ages so I sent out, when I came back it was at a repair screen, not the login screen. I've let it run chkdsk again, once more it's stuck on 10%.
I'm thinking the HDD is on it's way out. Correct?