I have a Windows 7 PC that is shutting down without warning, seemingly at random. Here are the symptoms and notes:
- PC seemingly turns off completely. After taking off the cover it turns out the fans continue to run after this happens.
- After this happens, the power button light turns and stays orange (it is white while running and dark while powered down). I can't restart the machine without unplugging it and plugging it back in.
- No warning messages of any kind. When I have had overheated PCs in the past, I have usually seen a heat-related warning message.
- Happened so far when browsing the internet, while idling, while booting, while running a diagnostic test (the one at start-up that is built into Windows).
- Fans seems to work fine.
- I ran a thermal test program on the box, and the highest readings I saw were GPU (68C) and "temp3" (62C). I have no idea what "temp3" represents.
- No changes have been made to the PC recently (software or hardware), outside of a minor move (really just sliding it about 3 feet a few days ago).
I realize that this is impossible to really diagnose via ServerFault--I am looking for help in steps I can take to diagnose the problem (programs I can run, etc.).
Thanks for any insight.