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Matshita DVD writer CD/DVD mystery

DVD writer can play commercial movie DVDs. It couldn't read a commercial Roxio v. 10 installation DVD, but was able to read a copy created by another PC. Couldn't read DVDs it had previously created. Doesn't seem to be able to read commercial music CDs.
We tried deleting the LowerFilters registry entry (the UpperFilters registry entry didn't exist), uninstalling the DVD writer from within Device Manager and rebooting. The problems above still persisted. Further testing showed that it could burn a music CD from media files on the PC which was playable on another CD player, but it could only recognise the file table itself, whining that it couldn't play that file type or maybe a CODEC was missing.
HP technician suggested backing up our files and reinstalling Vista.
Any other suggestions?

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Chris B

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SOLUTION

PUNKY

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TorDurBar

ASKER

HP Compaq made us backup our data and restore the notebook to factory settings first, using the recovery partition, to make sure the DVD drive was at fault. Bit of a hassle, but what can you do.
It did end up being a faulty DVD drive. HP Compaq are replacing the drive even though the notebook's 1 Year warranty has expired - maybe the drive itself has a longer warranty period (they often do). Thanks for the help (the ImageBurn freeware may prove useful in the future too) =o)

TorDurBar

ASKER

Cheers!