sorry for the late reply.
I've using a standard 400 watts zebronics PSU (m getting a new one Corsair 500 Watts soon) and been using the card for more than an year with no problems what so ever.
I've tried the bios thing and changed the setting to use PCE instead of onboard and then tried the card. There seems to be some error beeps when I do that.(1 long ,2 short).
I think the card is faulty. Time to hit the hardware market..
Thanks for everything guys.