Running: xp pro sp3, 3ghz, 1 gb ram, plenty of HDD space, 2 dvd drives RW, NERO 7, all updates
Uninstalled Virtual CD (v7) and my two dvd drives will no longer access commercial DVDs, but all CDs and "homemade DVDs work fine. Uninstalled all burning s/w and reinstalled NERO. Can't reinstall VCD as the trial expired. Upper and lower limit deleted in registry. The VCD company can't give mne a solution.

I have reinstalled both drives and the IDE cannels - to no avail.
The mesage is "Please insert a disk in drive Q:". Trying to access the drive from the DOS promt gives: "Device is not ready"
The error is also present under Ubuntu (can't mount).
I sincerely need help and thank you in advance
Ole