I have a Sapphire HD 5850 1GB graphics card. Bought it in May 2010. Has been working fine for so long. But today while playing Call Of Duty Black Ops, my system crashed. It became non responsive and i had to keep my power button pressed for 6sec to turn my pc off. After this it wouldn't start again.
The graphics card fan runs at full rpm (its very loud) and there is no display. My motherboard is unable to detect the gpu. tried it by plugging it into a friends pc but still same result.
I have tried disconnecting and reconnecting all cables. Also reset my motherboard bios but no help.
System config -
Core i5 750
ASUS P7P55D-E Pro
Sapphire Radeon HD5850
GSkill 4GB ram
everything is running at stock. no overclocking. Please help!!
PS - the motherboard gives a long beep followed by 3 short beeps which according to the user manual means that the motherboard didn't detect any graphics card installed.