i have core i7 920 1st gen processor,asus rampage 2 extreme motherboard,ram 4gb ddr3 with 1333 bus speed,graphic card hd 7870 with powersupply corsair vx550 watt and 1tb hard drive last time i play watch dogs game on this pc with ultra settings it stuck on game and i tried to rebot it but faild bcz it hardly stuck then i remove power cable from it and replace power cable again and start it but my pc stuck at widows logo .once again i unplug power cable and shutdown for about 5 to 10 sec then i start it with power button then screen shows display with this message ERROR CHASSIS INTRUDED FATAL ERROR...SYSTEM HALTED THEN