So I got this Samsung BD-ROM drive for my pc, because they're a lot cheaper than standalone TV players.
None of the free players worked with my disks (The Pacific, Fight Club), so I gave up and bought a Cyberlink PowerDVD 10 upgrade license (the shitty v7 one that came with the drive never worked). It worked bad, but worked.
Then I upgraded from a Radeon 4850 to a 6870 and PowerDVD stopped STARTING alltogether. It seems that Radeons from 5xxx up don't work with that piece of crap software.