Have you used the correct cords to power the gpu. is it seated in the pci lane correctly. is it in the preferred one as in the mobo manual? are all the power supply cables seated firmly in their sockets?
my gpu is allowed with my mobo i have a HIS radeon HD 7850 my mobo is a Asrock Z77 pro4 ive had it in both pci express 3.0, properly placed in both slots i have noticed though that on the golden fingers of the card i have a tiny notch taken out of the last finger closest to the lock in bracket is this normal? plus does anyone have any advice for my i/o problem?