hi gamers, i have a problem with my old rig, my rig freezes when playing any game(COD4, grid, farcry2) after 30mins - 1hr 30mins. when playing it will freeze and the sound loops..

whats the problem with my hardware? is there anything wrong with this rig(maybe incompatibility issues or timing and voltage problem.)didn't even try to overclock it..here's the specs

mobo asus striker II nse
intel core 2 quad q9550 2.83GHz
zotac geforce gtx 285
corsair ddr3 4GB 1333MHz sdram (9-9-9-24 timing as listed)
Aopen 1000W PSU (sli and crossfire support)
WD 500GB HDD
gigabyte isolo 210 chassis

i heard the problem is with the motherboard..please help me..

recently I've changed the mobo to gigabyte ga-ep45t-ud3r, gigabyte gtx 285, and kingston ddr3 4GB.. and now it doesn't freeze.. BUT I WANT THE ASUS STRIKER II NSE mobo because of 790i SLI and it is liquid cooling ready..

anyone have the ASUS STRIKER II NSE without problems on gaming?????

i need help with this.. seriously!!!