Is this a MOBO, CPU or graphics card issue?

[epags1]

I did post this on the Graphics forum but problem may extend beyond a graphics card. Have a computer with Window 7 with a MOBO that is an Intel DP55WP and an Intel processor Core i7 860. Recently computer developed a dark screen with the 2x2 beep indicating no graphics card. Replaced the graphics card with a new GeForce GT 730 card and still get the 2x2 error beep. Paid $100+ to have a computer repair company diagnose it and they said it was probably a bad MOBO. I ordered a new replacement MOBO (same model) and reused the existing processor. Problem still exists...no graphics. Even tried another monitor although that didn't really make any sense given the beep code. Could the processor be bad? Any other suggestions before I buy a new computer?

 

[alexoiu]

Since same issue with 2 different motherboards and GPUs... What you can test is a different power supply (if possible), before concluding that it's a CPU issue.

 

[epags1]

I am closing this thread. Thanks for taking the time to answer. After wasting time, I read the sticky 'bench it - troubleshooting" On Tom's forum for motherboards, I pulled all connections and ram then followed the suggest steps. Nothing I did appeared to be different then from my first install but the doggone thing started working.....go figure. I suspect the biggie was pulling the battery and allowing the MOBO to default.