When I first got it, I removed some viruses/malware from it, removed the old expired Norton Internet Security on it, installed SP3, started Windows Updates, and after a couple rounds of those, I deleted all the files in the temp folder under the user account (around 8 GBs) and ran CCleaner afterward to clean up other junk, registry errors, and remove unneeded start up programs.
Somewhere along the line there graphical glitches started happening (or they had been there the whole time and I just noticed them as I was to the point where I couldn't hit a button and come back in an hour and start the next thing). I've attached 2 pictures of some of the glitches. Other symptoms include the screen going black for a second sometimes when loading or closing a program, 1 pixel height lines about a quarter of an inch long in random places that come and go, and the word Start on the Start bar just being the shadow and missing the white letters.
Since then I have updated the video card driver to the newest version, installed the newest DirectX version, and finished all Windows Updates. The errors still continue.
I'm out of ideas of what this could be. Is something overheating? It's been running for about 8 hours straight now and the cover isn't even on. Would reinstalling Windows fix it?
OS: Windows XP Home Edition, SP3, 32-bit
CPU: Intel Celeron 346
RAM: 1.25 GB Single Channel DDR (1 1GB PC3200, 1 256 MB PC2100)
MB: Micro-Star International Co, LTD MS-7071
Graphics: 64MB GeForce MX/MX 400
HDD: 200 GB Maxtor IDE
Audio: Realtek AC'97
Any help is appreciated.