Did you keep up with the canned air routine? (laptop monthly, desktop every few months)
And Vista PCs are pretty old. So old the heatsink compound could be dry and cracked. Did you replace it recently?
My son was having problems with his Dell XPS 435T computer where it would hangup and just freeze.
Went there to look at it and went into safe mode to see If I could see anything. After about 30 seconds it froze up in safe mode just like it did starting it in Windows. Tried that 3 times.
Messed with that for a few minutes and decided to use Safe mode with networking, no more hangups or freezes?.
Was able to do a system restore, which didn't help the problem he was having, but did give me time to backup up all their pictures, files and Quicken files on a thumb drive. (They don't believe in backing up things) I think that just changed.
I still can't figure out the problem, but it like something running in the background causing the problem.
The computer has a i7 processor. When I go into task manager, performance, 2 of the 8 processor threads are are jumping up to 60 to 100% setting idle.
Two questions. 1 why does things work (somewhat) in safe mode with networking, but not just safe mode.
2 any suggestions on what to look for on the freeze and hangups and what to look for on the high CPU usage setting at idle.
Any ideas would be very much appreciated.