I've always found this problem quite annoying. When I start my PC, it shows a blank screen where it should show "DEL to enter BIOS" And the bootlogo. However unlike most people with this problem, my card (Radeon HD 7770) actually boots to Windows! Somehow I monkied around with the settings and ended up figuring it out one day, however its back to not showing it. Its very frustrating and I've tried searching all over this place but nobody has the same problem as me. For them its that they can't boot to windows however I can, it's the BIOS and bootlogo I can't see. All I get there is a blank screen, UNTIL Windows comes up. I'm on windows 8, and as for the mobo, its an Acer I know that.
EDIT:
I CAN get to BIOS and boot logo via the onboard GPU
EDIT:
I CAN get to BIOS and boot logo via the onboard GPU