I turned my pc on and at first it said no something please inster the disk, so i rebooted and this time it got as far as the windows splash screen and the bar started going across then it stopped and and i saw a quick glimps of a bsod and it when back to the post screen so i tried safe mode and last best known configuration but nothing helped, i haven't installed anything to give the bsod so im thinking hardware. any advice please.