I got a new comp. with BenQ DW1620 , or at least I taught so, it turned out it was a clone (and it looks like I/O magic drive). In device manager it showed as ATAPI DVD DD 2x16x4x16. I flashed f/w using WinDWFlash and B7S9.svc. (finally, after a few others) Now it shows as BENQ DVD DD DW1620. But when I try to watch a dvd the comp crashes when it comes to dvd menu. Event viewer says: Event viewer says: The device, \Device\CdRom0, has a bad block.