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The ASRock Z77 Extreme4 motherboard (with BIOS P2.90) doesn't recognize my PCIE video card (PowerColor R9 270X); BIOS system browser indicates PCIE slot are empty & video card DVI outputs do not work. Also doesn't appear in Windows device manager.
I tried the following:
I tried the following:
- R9 270X video card in different computer (video card then works)
- PCIE2 & PCIE3 slots (no video output on R9 270X)
- Clearing CMOS (no video output on R9 270X)
- Setting PCIE link speed to Auto, Gen1, Gen2, Gen3 (no video output on R9 270X)
- Setting 'IGPU Multi-Monitor' to 'Disabled' (no video output on R9 270X)
- monitor only connected to MB (MB DVI output works)
- monitor connected to either DVI connector on R9 270X (no video output on R9 270X)
- monitor connected to MB & additional monitor connected to R9270X (MB video works, no video output on R9 270X)
- measured 2 additional power connectors on end of R9 270X (all yellow at 11.95V relative to black)