I’ using a BenQ DW822A in an USB external case. The bios on the burner was upgraded, computer sys is running win 2000 with service pack 4. I could only sucessfully burn a disk 10% of the time. both + or -. I have tried both Roxio nero and Ulead DVD MovieFactory 3 Disc Creator. Burn will start and freeze at either 25 to 45%. At this point I have to power cycle the external drive. Does anyone have any solutions???