Satellite A100-773: DVD/CD drive does not recognise CDs

Hello Friends,
I have Sattelite A100-773.
When I turned it on today it did not recognise any CDs anymore. It however recognises DVDs and also can Burn CDs with Nero.
As soon as I put in a CD it says (in German) something like "Access denied, Function not allowed".
It is a mystery to me what has happened. Until yesterday it was perfect. Now the same CDs (and I have tried 20) wouldn' work anymore.
I have tried system recovery to a previous point in time, but it does not help. In the Hardware manager tells me that everything is allright.
Do you have any idea what it can be?
Thanks a lot
Ognian

Hi
In such case its not easy to say why it happens.
Generally if the drive is not able to read any medias either the hardware malfunctions or the CD or DVD is not compatible and supported.
But let us hope that the hardware is not corrupted.
Try to remove the drive from the device manager and reboot the notebook.
After the reboot the OS should recognise the drive again and should load the driver. Then you could try to test the drive again.
I found also a very great Microsoft document about:
How to troubleshoot issues that occur when you write data to a CD-R or CD-RW optical disc in Windows XP
http://support.microsoft.com/kb/324129
and this:
http://support.microsoft.com/kb/315350/
The other possibility is to use the Recovery CD to reinstall the OS.

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