Can you check the following registry key?:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4d36e96b-e325-11ce-bfc1-08002be10318}
At that registry key, in the right window, is there, under "Name", either an UpperFilters or
LowerFilters value?
If so, for each of the UpperFilters and/or LowerFilters value, what is listed under "Data"?
Can you also check the following registry key?:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4d36e96f-e325-11ce-bfc1-08002be10318}
At that registry key, in the right window, is there, under "Name", either an UpperFilters or
LowerFilters value?
If so, for each of the UpperFilters and/or LowerFilters value, what is listed under "Data"?