Pc turns on but no display comes on

[Rocky Lopez]

So these past few weeks I started making editing videos on After Effects cs5.5 and every time I tried to render, my computer would overheat and crash at around 85-95 Degrees Celsius. Well I decided to get a Corsair H55 cooling kit to fix the temperature problem. As soon as I installed the water cooling kit, I would hit the power button, but my monitor would be black, no image popped up. So after countless hours of google searching, I began to think it was a faulty motherboard, so I ditched my old one, and bought a new one. That didn't fix the problem.

my specs are
AMD Phenom 2 x4 processor
12gb ram
550Watt PSU
ASRock 970 extreme 3 mobo
Zotec Nvidia GT 630
Corsair H55 hydro cooler
500GB hdd

 

[benn371]

I hope you done all the basics like checking all the cables inside the cabinet and even outside the cabinet, is the keyboard num lock status lights up? Have tried with another processor cause mostly like I think the processor may have been died.