Try booting to Safe Mode and checking if any more restore points are displayed in that mode. Hint: a quick way to open it is to click the Start button and then simply type rstrui.exe in the Search box just above. Then click the item in the box above when it appears there.
If that fails try downloading Stinger and Malwarebytes Free both linked in the last link in my signature below and try running them.
You might also want to run DDS and post its log on the special forum listed near the bottom of that link. They have experts there for things like this.