I have a desktop PC running Win XP (SP 3). It has begun intermittently crashing, with this behavior:
- for a few seconds, a pattern of small black rectangles flashes rapidly across the screen
- then the system hangs; cursor is frozen, keyboard won't work, ctrl-alt-del won't work
- I force a shutdown with the power button
- It reboots to windows normally
It stays on a few minutes, or a few hours, before it crashes again. It has crashed within a few minutes of starting up after being off overnight -- so a buildup of heat doesn't seem to be the problem.
What are the most likely things that could be causing this? How can I test to try to identify or eliminate those possible causes?
Thanks for ideas,