If the CPU Heatsink and fan is'nt working correctly then wouldn't my processor be over heating? My temps are good.
I already checked for worms, adaware and viruses. I updated my Spybot, Ad-Aware and Norton Anti Virus, turned off system restore, booted in safe mode, did complete system scans on my C: drive and found nothing.
So If you are saying that it can't be my graphics card then all that leaves is the processor and motherboard.