Look in the Device Manager .........

Start | Control Panel | System in classic view | Hardware tab | Device Manager

Click on the (+) next to DVD/CD-ROM drives.  Right-click the drive and select Properties.
Is there an Error Code (number) present?

Yes, (Code 39)

driver of date; 1-7-2001

version; 5.1.2535.0 

from Ms. 

Try this Dell Article for removing the Upperfilters and Lowerfilters
in the Registry here .............

http://support.dell.com/support/topics/global.aspx/support/dsn/en/document?docid=1B791FDD8FD0473EA268BE881319EBC5&c=us&l=en&s=dhs

Disregard the reference to Roxio.

THANKS! That article really helped. In the regedit I didn't look in the Class-folder but in other folder were same key nr. can be found but with no upper-/or lowerfilters to be found except for the standard file.

Thanks again, it seems to be working now.

Cheers!

:smileyhappy: