I have an HP Pavilion dv6324us. (specs from hp) There have been a few problems with it before, but nothing serious (wireless internet stopped working - probably the biggest other problem, but no big deal)
When I turn the computer on, all of the lights light up but nothing shows up on the display. The fan runs at normal speed and then slows down (it did not do this when starting normal) after which it shuts off completely and restarts. This continues until I do a hard shutdown. (each 'cycle' takes about a minute)
This problem came completely out of the blue. I was using the computer the previous day with no problems at all. I have not used any resource intensive programs (games, photo editing, etc) for a long time. I'm 99.9% positive I had no viruses or anything last time it was working ok.
I have tried taking out the memory and harddrive and re-seating them, and unplugging the RTC battery to reset the CMOS, both to no effect.
Any help or ideas would be greatly appreciated.