It's happened at random times, when I'm online, when I'm offline editing videos, once even during shutdown. I keep looking at the event viewer after these incidents, and there's nothing listed that seems like the obvious culprit. There will be errors and warnings for Windows Search Service, but they don't seem to be happening during the periods when the computer locks up.
The Ebay seller insists he had no problems with it, and like I said he has very positive ratings. I'm guessing I screwed up the registry somehow trying to get rid of some of the programs that were pre-installed on this machine. I don't need Itunes and Realmedia and other things that eat a lot of memory, but uninstalling them may have screwed me up. In at least one case I uninstalled something and when I rebooted the computer it had obvious caused a problem, I was getting pop-ups about dlls and stuff like that. I did a system restore and fixed that problem, but the machine is obviously still having bugs.
I've tried multiple system restores, but I don't think I have any restore points to a time before this problem started. I've run Ccleaner, I've run Avast, Malwarebytes, Security Essentials, I downloaded and ran various programs to examine the registry, to look at the computer's heat, to test the RAM. Everything comes back normal, I get rid of viruses, the hardware seems fine, etc... And then my computer freezes up again. This machine has two gigs of memory, but apparently about half of it is already taken up with these programs I don't need or want, but can't seem to get rid of without causing more problems!
I do not have much money to spend and I'm really hoping I can salvage this thing. (And no, the seller won't accept returns. I took his good seller rating as a sign he wouldn't knowingly sell a lemon.)
I'm running XP professional, Service Pack 3, on a 32-bit system. I am not super tech-savvy, but I can usually solve my own problems... And this time I'm just stumped.
Edited by gstacy, 25 April 2012 - 12:40 AM.