I have an ASUS Radeon 7870 and think it might be DOA. When I go into the BIOS and switch from integrated to PCI-E Graphics and install the card, I get no signal only integrated works. Ive also tried to just not change anything in the BIOS and install the card with the drivers disk to get it going but all the disk says is "Please install the VGA of ASUS". Any help is appreciated.