The other day, an unusually hot day(and I don't have AC) My processor (Pentium D 945) temperatures reached 73 degrees C and my motherboard (Intel 965WH) reached 71 degrees when trying to load a new graphic intensive game. I closed the game and the temperatures returned to normal. I turned off the computer for the night to let it cool down. Before I turned the computer on in the morning there was a power outage (so with my computer was off, but still plugged in when the power came back on). I don't know if it was the overheating or the power outage that caused my problem, but now I am unable to boot my PC. At first the system would run for a little bit and then the motherboard would continuously beep(which means a processor error) so I reseated my processor and reapplied thermal grease(artic silver Ceramique) and reseated my CPU fan (Artic Cooler freezer 7). Now the motherboard gives 4 beeps (which mean it is grounded), but I have looked over it several times and checked many things and I can almost guarantee it is not grounded. I know the easy solution would be switch out the motherboard and then the processor, but I don't have ones to switch at my disposal. So I am wondering if there is any other way to tell what my problem is and if I have a fried motherboard or processor, before a spend a large chunk of money trying to swap each part out to find the problem.
Thank you very much for your time and any help is greatly appreciated.