Windows Vista CD drive not working, giving code 19

Vista SP1
HL-DT-ST DVD-RAM GH22NP20 ATA Device [CD-ROM drive]

My mother claims to have never used her CD drive on her computer until recently, after which she noticed it would not work. I tried several simple options: restart, enable/disable, search for drivers, etc. I tried the online Windows fix-it tool and that didn't work. I Googled and came up with a registry fix that I tried and that didn't work.

Before when I tried these solutions, the drive would simply not load the CD and ask for me to insert one that works. Now, the CD drive is acting like a hard drive.

When I tried to do the registry fix, there was upper-filters, but no lower. I'm not sure what's going on there.

Anyways, I'm at a loss. Please help!

 

Drive letter is I, name of the drive is DVD-CD RW [or something similar], but it's showing a storage progress bar, has hard drive recovery tools and the like. When you right click it for properties, it says type: CD drive, file system: udp

but it also has a tab for disc tools: error check, defragment, etc.

I want to fix the problem for her, then I'm going to downgrade her to XP.

 

Is UDP correct? That seems to be a networking file system.

Have you checked many types of disks? A CD-RW that has fixed disk properties could be made with a packet writing program. It works like a floppy disk
http://en.wikipedia.org/wiki/Packet_writing
Programs that can make them are Ahead (Nero) InCD, Roxio DirectCD and Sonic DLA. Vista can open those disks, Windows XP couldn't unless a packet writing program was installed.

Matt
Edit: I checked a CD-RW disk formatted by Ahead InCD, it offers Error Checking, defragmentation, etc