DVD-ROM & CD-ROM drives both stopped working


My PC is a Dell dimension 8200.
Pentium 4 at 1.8 ghz.
Windows XP home ed
HD has 127 GB available. 768 MB RAM.
Both my DVD-ROM & CD-ROM drives will not play commercial CD’s or CD-ROM’s anymore.
They play previously recorded CD-R’s fine and record on them if something is already recorded.
If I try a new blank CD-R it won’t record.
DVD’s play fine in the DVD-ROM drive.
If only one had failed I would just go buy another, but both at the same time???

What I already did:

-I went into “My computer” to double click both these drives manually
and get messages telling me “To insert disc in device” while the discs
are in there.
-I went into “File–>properties–>autoplay” of both these devices
to make sure they were set on “autoplay”.
-I disabled in control panel–>system–>hardware–>device manager my CD-
ROM drive and restarted windows, re enabled the CD-ROM drive to no
-I try the following hack recommended to me to no avail
"reg DELETEHKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /dNoDriveTypeAutoRun /f "
-I also tried this fix recommended to me to no avail.

Can anybody help?

Thanks a lot

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