So I ordered all new parts for a brand new PC recently.
Intel Core 2 Duo E6750
2GB DDR2 RAM
Seagate 500GB HDD
Atrix Gaming Case
GeForce 8800 GT Sonic
Here is my problem... I hooked up my mobo, PSU, CPU, heatsink and GFX card.
The computer would turn on, but not POST or display anything from the graphics card. All the fans were going, and on the mobo itself the "CPU load" LEDs were all coloured, so I assume that meant the CPU was at full load.
I couldn't figure out what was wrong, so I turned everything off, took out the mobo and did a test outside of the case. Same thing.
Put the stuff back in, all in the same place and order, and now when I push the power button all I get is the fans going around 2-3 times and then a shutdown. I don't even think the computer itself turns on, there is literally about a second's worth of power in the PC and then it's dead.
The PSU can't be fried because this happened once before and I fixed it, but I can't remember how and/or replicate the solution.