Here is my problem which started yesterday after a manual shut down of the system. Everything was working perfectly before I shut it down to run errands. When I came back and powered the system back on, it shut off after a few seconds. I pushed the power button it came back on with no video, no POST and no beeps. It then started to cycle the restart, and shutdown repeatedly and will not make it an farther. I built this system myself and has been running for almost 2 months normally. I had a problem with the first Mobo and had to return it, but got the same make and model. the original mobo wouldn't accept the RAM, it beeped if I had more than 1 stick of memory installed. The replacement mobo worked just fine. That is until yesterday when all of this started to happen.
Here's what I have tried up to this point. I reseated all of the power cords, uninstaled everything except for the cpu and psu. Without RAMinstalled, I got 3 beeps,I have also installed the RAM one at a time in all of the 3 dimmslots with no luck, without the hard drive installed, no beeps, without the video card no beeps. I have reset the CMOS jumper with the battery out and left it unplugged for about an hour. Still nothing. I have reseated the graphicscard also all to no avail. Any suggestions would be helpful.
My specs are
Intel DX58SO Mobo
Intel core i7 920
NVidia 9800GTX Superclocked
Western Digital 320G HDD
3G Corsair Tri Channel DDR3 1333Mhz
Windows XP Home SP 3
Coolmax 950 Watt green power PSU
Coolermaster 331 midtower case