Could be a couple of things. The first as that your power supply is too week. Try taking out your Radeon and using the onboard video since thats a G31 board. If you can get into your BIOS after that then get a bigger power supply. If not disconnect all your devices and try booting it with one RAM stick and then the other. You could have bad RAM or another device that isn't playing nice with your systems BIOS. If you still can't get into the BIOS screen, then you mighnt have a bad board or corrupted BIOS, which means you RMA that board.