Hi,
Try to reset the security settings back to default and check if it fixes the issues.
- Type “cmd” without quotes in the start search box.
- On the left pane, right click on the “cmd” option and select “Run as Administrator” on the bottom menu.
- Copy the following command, paste it in command prompt.
secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose
- You will receive a "Task is completed" message, and a warning message that something could not be done. You can safely ignore this message.
Hope this helps.