pc wont turn on

[kizen]

I built a comp for my grandparents about a year and a half ago. Recently it hasn't been turning on when you hit the power button on the case. I managed to get the comp on after jiggling some wires inside, and left it running for 3 days. During that time I was using photoshop, dreamweaver, and playing wow while it was on.

I then shut the computer off, waited about 5-10 min, and hit the power button and it wouldn't come back on.

Does anyone have any suggestions about what may be wrong/ how to fix it? Thanks in advance.

Specs:
Case - Thermaltake Armor VA8000
CPU- AMD Opteron 180
Graphics Card - evga 7800gtx
RAM - 2gig OCZ extreme gamer
HD - WD Raptor 150gb 10k rpm
mobo- DFI Lanparty
PSU - OCZ (I believe it's 700 watts)

 

[RoBo]

Pehaps you should look at the wires you had to jiggle.