Hi fubla,
Please follow the below procedure. I had the same issue and it is something to do with upper & lower filters in windows. You can google "Upperfilter & Lowerfilter optical drive", this will give you some info.
Click StartStart button, type regedit in the Start Search box, and then click regedit in the Programs list.
User Account Control permission If you are prompted for an administrator password or confirmation, type your password or click Continue.
Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
2684263Warning There can be many instances of the registry subkey that is mentioned in step 2. You must make sure that you are in the appropriate registry subkey before you change the UpperFilters and the LowerFilters values. To verify that you are in the appropriate registry subkey, make sure that the Default value is DVD/CD-ROM and the Class value is CDROM.
If you see UpperFilters in the pane on the right side, right-click UpperFilters, and then click Delete.
Click Yes to confirm the removal of the UpperFilters registry entry.
If you see LowerFilters in the pane on the right side, right-click LowerFilters, and then click Delete.
Click Yes to confirm the removal of the LowerFilters registry entry.
Exit Registry Editor, and then restart the computer.