I cleaned up my computer with mcafee cleaner and it cleaned my restore point how do i get my restore point back. i need to go back to a later day than whats shown to fix my computer. Please help

I want to know what kind of spray, if any, that I can use to safely clean my computer screen.

I’ve already got AVG, Spybot Search and Destroy, and Adaware.

Anything else that I need?