Running Windows XP, havent had to install anything new for a few months so I am not sure when it stopped working exactly, but it wasnt in this 'RW' mode when it was working, in that time things that I think could have messed with it was magicISO. Its a sony drive, though im not exactly sure what model, had it for probably 6 months, but hardly used it so not sure how it could just die enless thats just what they do.