Entire PC freezes while playing and loud buzzing noise through speakers

[Entire PC freezes while playing and loud buzzing noise through speakers]

oh alright maybe ill go ahead and get the video card then -_- thanks guys

[Entire PC freezes while playing and loud buzzing noise through speakers]

hey thanks guys i think its a heat issue cuz i keep my graphics really low and my card isnt getting as hot and my pc hasn't froze tonight (:

[Entire PC freezes while playing and loud buzzing noise through speakers]

lol what do u mean :P

[Entire PC freezes while playing and loud buzzing noise through speakers]

im using xp pro

[Entire PC freezes while playing and loud buzzing noise through speakers]

Hi, my problem is basically what the title says iv looked around and have found people with there game crashing and freezing but no one with the identical problem as mine

it freezes randomly such as in the editor, main menu, or any time through out playing the game. iv tried running all different types of graphic settings and nothing seems to work, it just freezes and that loud buzzing noise through my speakers. and iv noticed that my hard drive light doesnt blink any more. so i bought a new one sense i needed it and thought it could be the problem, it wasnt

iv tried updating my Nvidia drivers and reformatting my pc twice. im getting really tired of this :| im thinking about buying a new video card but i thought id come on here and ask for help first

i have a 8800 gts 512mb and a quad core 9400 amd. i forgot my power supply but its at least 500 because that was my old one

help please (: thanks in advance - penguin