My pc is dual core 2 (2ghz) ram 1g(DDR2), videocard 256(Geforce), HDD 80g. Im using XP Sp3. its a new format and newly window installed and all drivers requirement. i have the same case, pc hang during any kind of games like DOTA, Crossfire and any other online game. I clean my pc all throughout. I even use and test other working videocard and memory, HDD even cpu fan. but nothing happen the pc still hang. please what other solution i can do?