ok this is my problem ive got a AMD ADX645WFGMBOX Athlon II X4 645 Quad-Core Processor (3.10 GHz, 2MB Cache, Socket AM3, 95W put it in about 2 weeks ago and it was working fine for about a week then it over heated and shut down so i opened the machine and noticed the heat sink became loose reason was the the clip on the retainer bracket had snapped so i got a nother one and fitted it put every thing back together every thing is secure and now its still over heating could the processor of blown ?it shuts down as soon as it goes in to windows anybody got any ideas many thanks