If I use my search engine, or my browser or even notepad, I type in a couple of letters and then whatever letter I last typed starts repeating itself and it just goes on and on. My keyboard keys aren't sticking, so I have no idea what's happening. I ran Malewarebytes and Webroot and then Combofix. It seemed to work for a while but then it just starts doing it again. I don't know if it's virus related or not. But when it happens, I can't get anything done. Any advice is appeciated.