Bought a retail celeron d 2.66 ghz that is going into my brothers computer and before it came in I had my P4 in his comp because the processor was the only thing we needed. So with it in there everything was working fine. I got my celly in the mail just now put it in and the P.O.S. won't boot. Took the heatsink off, and the thermal paste was completely dry (it was already on the retail heatsink) and half of it was stuck on the processor so I cleaned it off and used some other paste and its still dead... is this processor fried? Or is there anything else that could be messed up. Only other thing I did was put a cd burner in it. Plase help me out A.S.A.P.