A little more than a year ago I built a decent computer (with your help. thanks!).
A couple of months later the computer mysteriously stopped working and the only sign of life was a lamp glowing on the motherboard. The fans also spun for less then a split second when trying to power the computer for the first time after plugging in the power cable. I figured it was either the motherboard or the CPU, but I didn't have the time or the money to look into it back then.
Now, more than 6 months later I've found the time and some money to try and take care of it. Yesterday I tested some parts and bought a new motherboard. After installing the motherboard, the computer will turn on, but it will turn off after a few seconds then turn back on and remain that way until i turn it off manually. During that time my screen remains black. I've tested all components except the CPU now so I'll probably have to buy a new one. But I have a few questions before I do that.
First off here is my Specs:
1x MSI Twin Frozr II GTX 580
1x Corsair TX750
1x Intel i5 2500k with stock fan
2x Gskill Ripjaws X 4gb
1x Samsung SpinPoint F3 HD103SJ 32MB 1TB
1x NZXT Hades case
the new motherboard I bought was: ASUS P8Z77 LK
and the old one was: Asus P8P67 Pro B3
Do you think there is anything else that might be causing my problems? I've tested the ram, Graphics card, Psu and Hdd on another machine and they all work. I've tried putting the ram in different slots with the same result as earlier. I've tried resetting the cmos following instructions in the motherboard manual.
If you think the cpu is causing this, would you mind helping me chose what to buy?
I've been thinking about buying an Intel Core i5 3450 3,1Ghz Socket 1155, it seems alright and not too expensive. It's not unlocked but I don't think I have the guts to mess around with this computer anymore anyway.
Thanks for your help!
Edit: I forgot to mention that I didn't find any chipped pins while studying the CPU. I also can't seem to find the speaker cable (the one you plug into your motherboard) so my computer is mute and probably can't beep.