The reason I asked, because when I tried to boot to Vista, I got a black screen(after the loading bar). However, when I booted to Safe Mode, it booted just fine. I just could not boot to Vista for some reason. I pressed the Clear CMOS by the I/O plate, and restarted my PC and it booted just fine. The time did not change at all though.
Do you think my CMOS battery is getting weaker???