I haven't made any changes to anything; haven't uploaded new software or done anything different. All of a sudden my cursor won't appear. I can only click on the icons at the very top and the very bottom. When I try to click on anything in the middle, my cursor doesn't appear. In I can open system preferences but the cursor disappears when I try to click on the trackpad icon. I'm using my daughter's computer right now because mine is unuseable. In Word as well as in Safari.


Thank you.