Posted January 17, 2019
Lucumo: Nah, I would have suspected something like this then. It's Windows 7 on a >6 year-old PC. Hm...I did have a battery issue last year which reset my BIOS settings and made the HDD unavailable. No idea if that would mess with the system settings though. Might be possible because I disinctly remember seeing various folders not too long ago.
BIOS settings shouldn't mess with OS settings. And Win7 usually is pretty reliable with keeping settings. Some third-party tools might mess with them though - I don't know if you use stuff like that.