For what its worth, why not try reflashing?
SH-D163A Kreon FirmwareFlash SAMSUNG SH-D162C or SH-D163A hacked Firmware:this step only has to be executed one time because the KREON Firmware remains in the drive
forever or until you flash another firmware into it.
- make sure there is no CD/DVD inside of the drive!!!
- start (doubleclick) sfdnwin.exe
- select your Samsung drive from pulldownmenu: TSSTcorpDVD-ROM SH-D16....
- at the top left click "DOWNLOAD FILE OPEN"
- select file: SH-D16.......XB360_KREON_....bin
- at the top left click "START DOWNLOAD" (button in the middle)
after successfully flashing the drive you will receive the message: "DOWNLOAD OK!! RESTART WINDOWS."
Reboot your pc. You can now use the drive for making legal Xbox-360 Backups.
I have a feeling that is information that you already know, but I am sorta stumped on this problem at the moment honestly!
UPDATE Sorry I just realized you tried to reflash but it didnt work. If I were you, I would definately try and return it or get a new one, and see what happens. Either that, or how about go for the SH-D162C? Its IDE instead of SATA, so maybe that will help?