Driver issues, driver issues.

Once again, I'm suspecting that the inability to disable the built-in PCIe slot is the culprit. The drivers install fine with the card in the native slot, but it's been a headache to get anything to run in the adapted slot.

I might just try a different system as a testbench or something, but that means running through benchmarks again, which would be rather painful considering how pre-PCIe systems usually ship with only a single core CPU.

EDIT: To be fair though, the card is advertised for use in systems without native PCIe support, and one of the top reviews is from someone with the same driver installation issues for a GPU. Sooooooo... yeah.