1. Press the Windows logo key+R to open the Run dialog box.
2. Type regedit in the Run dialog box, then press Enter. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow
3. In the navigation pane, locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
4. In the right pane, click UpperFilters.
(Note You may also see an UpperFilters.bak registry entry. You do not have to remove that entry. Click UpperFilters only. If you do not see the UpperFilters registry entry, you still might have to remove the LowerFilters registry entry. To do this, go to step 7.)
5. On the Edit menu, click Delete. When you are prompted to confirm the deletion, click Yes.
6.In the right pane, click LowerFilters.
7.On the Edit menu, click Delete. When you are prompted to confirm the deletion, click Yes.
8. Exit Registry Editor and restart restart computer.