[LIST=1]
[*][LEFT]Click [B]Start[/B] [/LEFT]
, and then click [B]All Programs[/B].
[*][LEFT]Click [B]Accessories[/B], and then click [B]Run[/B]. [/LEFT]
[*][LEFT]Type regedit, and then click [B]OK[/B].
[LEFT]If you are prompted for an administrator password or for a confirmation, type the password, or click [B]Allow[/B]. [/LEFT]
[/LEFT]
[*][LEFT]In the navigation pane, locate and then click the following registry subkey:
[LEFT]HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}[/LEFT]
[/LEFT]
[*][LEFT]In the right pane, click [B]UpperFilters[/B].
[LEFT][B]Note[/B] You may also see an UpperFilters.bak registry entry. You do not have to remove that entry. Click [B]UpperFilters[/B] 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 8. [/LEFT]
[/LEFT]
[*][LEFT]On the [B]Edit[/B] menu, click [B]Delete[/B]. [/LEFT]
[*][LEFT]When you are prompted to confirm the deletion, click [B]Yes[/B]. [/LEFT]
[*][LEFT]In the right pane, click [B]LowerFilters[/B].
[LEFT][B]Note[/B] If you do not see the LowerFilters registry entry, unfortunately this content cannot help you any further.[/LEFT]
[/LEFT]
[*][LEFT]On the [B]Edit[/B] menu, click [B]Delete[/B]. [/LEFT]
[*][LEFT]When you are prompted to confirm the deletion, click [B]Yes[/B]. [/LEFT]
[*][LEFT]Exit Registry Editor. [/LEFT]
[*][LEFT]Restart the computer.[/LEFT]
[/LIST]