My NEC NR 7900A DVD ROM drive won't burn disks, it says it is working properly in properties and drivers are up to date. I burned a CD last night and the burner program I used stated the burn was complete but it wasn't anything on the disk. When I tried to burn the CD again, I'm being asked to insert a disk and there's already one inserted. I've tried using a Sony CD and a Memorex DVD. It will play a store bought CD even though the list of songs don't show when I go into my computer and click on the drive. How do I get my NEC NR 7900A DVD ROM drive to be recognized?