Ok so i just put a new power supply in a computer for a friend, because the old ones fan stopped spinning, now the new power supply works and boots up the computer but does not output anything to the monior, not even at the bios page. I tryed a different graphics card and replacing the bios battery. nothing seems to work. there is only one ram card. Sorry i dont know the specs but i do know that it is an e-machines T2460.