Hi, sorry if this is not in the correct place, mods please move if not. Since an engineer replaced a faulty DVD drive under warranty the computer halts on F1 error, there are too many entries in the device manager and I wonder if the entry was removed for the faulty drive. The warranty has now expired, day after the drive was fitted, I assume I need to delete several entries but am not sure which ones. I also have the problem now, when shutdown, it does for 5 seconds or so before restarting itself. The system is a 3.4 Intel, Asus P5GDC deluxe running XP home.