I did a fresh install of Windows 7 Ultimate 64-bit from a DVD with no problems. Once Windows 7 booted, Device Manager saw the drive and the proper model number. Says it was working properly. I could even flash the firmware. What I can't do, is eject the tray or see the disc. I can't eject manually or via Windows 7. And Windows 7 doesn't see the Windows 7 Ultimate DVD stuck inside.
I flashed the firmware w/ Vista 64-bit firmware, Vista 64-bit from the previous version, XP, Vista 32-bit...didn't matter.
So I bought a brand new Sony drive people on Newegg had zero problems with in Windows 7. Just installed it and I have the same problem!!!!
Both drives are SATA. I have 2 SATA HDDs as well. The order shouldn't matter with SATA right? Still I changed the DVD drive to be first in the chain, rather than 2nd, but that didn't help either.