remove the filters
http://support.microsoft.com/kb/929461
try a different brand of disks
check for a firmware update for the drive
uninstall the drive from the device manager and reboot
clean the laser
the dvd laser may have gone
http://support.microsoft.com/kb/929461
try a different brand of disks
check for a firmware update for the drive
uninstall the drive from the device manager and reboot
clean the laser
the dvd laser may have gone