About a year ago I switched from my good ol' PC and bought myself a laptop. The PC was perfectly fine, until now - first it was working great, I even installed Windows8 on it to check it out, but then some graphical issues started - white lines from top to bottom of the screen. I've borrowed a graphic card from a friend and looks like it was the problem. Now I bought a new graphic card, but I have no way to check it, cause now my PC doesn't even boot.
I've tried removing all parts except the processor - nothing happens. Green LED on the motherboard lights up when I turn power supply on, but that's all. Fans in PSU and CPU don't even move.
I've checked if the PSU works using an old PC - it's working fine, everything boots instantly.
Looks like it's either mobo or processor issue - is there any way to check it?
I've never had any hardware problems, assembled many PCs for myself and friends, but now I'm helpless.