It won't let me edit the form again. I have always had a Login Password, I thought login password protection meant that you can't access the SAM File or use a Unlocker USB to gain access to the PC.
Since this was posted, I have set UAC to the highest setting from yours and other poster's recommendation.
Apart from the OP's explanation hence everything is well covered.
Only to give a warning about the usage of AdwCleaner, since one the members here suffer an issue about possible lost of internet connection; likely watch out from scan result because of possible erroneous detection.