Very weird problem. I recently upgraded to an NEC 3500 and a Liteon cd burner.
I recently swapped out the Liteon for the AOpen DVD-1640-Pro that I had before in order to rip movies faster than with the NEC. The problem is that the AOpen wont recognize any pressed discs. The light on the drive goes on and flickers, the disc icon appears in Windows for about 6 seconds then the drive ejects the disc. But it will recognize and play the backups I have as well as CDs..
I have no idea what is wrong... any ideas???