Abit GD8 pro always giving fast system beep..

Question

im using mobo=abit GD8 pro.Processor=intel pentium dual core 3.0Ram= Corsair DDr2 256x2Display Card= Nvidia Gforce GF 6600GT>each time i shake the cpu a bit....it wont start after that...just giving a short fast beep..i trying everything clean the ram/display card...but the result still wont work......and when that happen..heheheh i just let the cpu rest for 1-2 week...without doing anything...dangggggggggggggg it work!!!!!!!!!!!!.... donno wat actually happen...could it be cause by the sata HDD??and for ur info this thing happen offen......