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We fix and repair laptop motherboard no video, no...
,
type regedit in the Start
Search box, and then click regedit in the
Programs list.
If you
are prompted for an administrator password or confirmation, type your password,
or click Continue.
2.
Locate, and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}Caution
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
modifying the UpperFilters and the LowerFilters values. To verify that you are
in the appropriate registry subkey, make sure that the Default data value is
DVD/CD-ROM and the Class data value is CDROM.
3.
In the right pane, right-click UpperFilters, and then click Delete.
4.
Click Yes to confirm the removal of
the UpperFilters registry entry.
5.
In the right pane, right-click LowerFilters, and then click Delete.
6.
Click Yes to confirm the removal of
the LowerFilters registry entry.
7.
Exit Registry Editor, and then restart the computer.
Note After you remove the UpperFilters registry
entry and the LowerFilters registry entry, you may lose functionality in certain
programs such as CD recording programs. In this scenario, you must reinstall any
affected programs. If the problem recurs, contact the program vendor to
determine whether an update is available for the program.