I will try to be as explicit in details so you guys have as much to go on as possible.
The basic problem is this.
I built a pretty amazing machine six months ago (hardware is shown at the end of this post). It has been running pretty well. I have several fans installed to cool things down as well as heat pipes on the mobo, but I noticed through the summer that it seemed to get hot and occasionally shut down after running for several days (this would happen OCCASIONALLY - NOT CONSISTENTLY and after letting it cool off for a few minutes it would start up without issue).
The other night it shut off. Now when I start it up the following happens. Power supply turns on and seems to be supplying power to everything (all fans are working). I do not get a POST (I get no signal to the monitor at all) and I do not get any diagnostic beeps.
I have tried the following with no change in result:
I disconnected the hard drives.
I reset CMOS.
I have pulled the RAM and reseated.
I pulled the video card and reseated.
My guess is that something blew, due to heat buildup (strange thing is that I really don't think it was running that hot because the temperature has cooled off considerably), but without any diagnostics I don't really know where to start.
Any help would be much appreciated.
Gigabyte N680SLI-DQ6 Mobo
Intel Core 2 Duo 3MHz
EVGA e-GeForce 8800GTS
4x1GB Corsair Dominator
Coolmax CTG-1000 1000W Power Supply
5 Seagate SATA Harddrives