might be the permissions, open the command prompt, paste in
reg query HKEY_LOCAL_MACHINE\System\ControlSet001\Services\N tmsSvc\Config\Standalone\drivelist /s
press enter
if it says access denied, it must be the permissions
i have recently found a way of seeing the info without changing the permissions, so if access is denied, type in
at **:** /interactive cmd.exe
press enter
[note, change **:** for the current time plus a couple of minutes, and use the 24 hour system, eg if it's 18:00 currently, type in
at 18:02 /interactive cmd.exe
press enter, close the command prompt
when the command prompt appears at the set time it will be running in the system account, then repeat the reg query command
as it will be running as system, access won't be denied for the reg query
btw, if at **:** / cmd.exe was used instead of at **:** /interactive cmd.exe , it would run but would be hidden