everytime i play a game wif high graphics my computer just closes but the power is still on. i have to force close it by holding down the power button for 5 seconds then turn it back on. the computer closes like this whenever i play a game and i hear from the back of the computer it makes some static kind of noise. when it gets louder and faster the computer closes. i just recently bought a 256mb graphics card and installed it thinking it was a graphics card problem because i had a 64mb one before. i have 1088mb ram so i dont think its a ram problem. but basically im just trying to play this game called silkroad online but it happens to other good graphic games as well. can any solve this problem?