I have a new Samsung SH-S203B SATA DVD burner. Whenever I open the disk door it closes immediately by itself. I should still be able to RMA it, but I wanted to see if I could do anything to fix it myself. It still plays cd's and I installed a game with it. It is also the burner that I recently installed Windows with. I can see it in Device Manager with no warnings and as far as I can tell it has the latest firmware. I've tried unplugging the SATA and power cable and booting to Windows XP HOME SP3 without the burner and then plugging them back in and rebooted which didn't help. This is my first self built computer and my first nLited/slipstreamed XP Sp3 install. I also installed XP in RAID (AHCI) mode and I'm not sure if that could be part of the problem as it was new territory for me. If anyone has any ideas as what to try next, I would appreciate the help.