These 2 programs I told you about take out all useless used space.Which one did you try.Read about both on Cnet.
https://www.cnet.com/products/spybot-search-and-destroy/review/
http://download.cnet.com/s/advanced-system-care/free/
I downloaded the advanced care program but my computer refuses to allow the program to work. It is blocked and I am unable to unblock it.