I have a no name white box PC running XP pro, with a dvd-rom that is recognized in BIOS and device manager, but will not function. If you click on the drive in My Computer it says "Please insert a disk into drive" --even though a disk is already inserted. Any ideas how to troubleshoot this? I thought it might be a virus, but I cant access the drive via my Emergency Repair Disk (Bart PE) because I cant boot from disc in BIOS either --So even in BIOS it is having problems even though it is recognized--could a virus affect it in BIOS? or could it be the drive is just bad? any ideas?