New
#20
The "Some settings are managed by your system administrator" part in your screenshot indicates that you have a policy set that is preventing your from making changes. It's going to be a hunt in the registry now to see if we can find it.
If you like, please export the two keys below from your registry as a .reg file, and upload them here. This is where the policy should be set at, and would just be a matter of going through them to see which one it may be.
HKEY_CURRENT_USERS\SOFTWARE\Policies
HKEY_LOCAL_MACHINE\SOFTWARE\Policies