hello i have a problem : the problem is that ive installed a gtx 970 g1 gigabyte on my pc but my psu is 500w so ive tried to check if that 500w is true or not but when i started the computer there was message that says select a bootable device so i though it was bcz of the psw theres not enough power but when we removed the gpu the message was there again ... please help me sry for the bad english... is it possible that the hard disc is fried ?