Hi, I recently lost my win key , which used to open the start menu, so I upgraded to 8.1. thinking that may fix it, wrong! Now it still don't work , but I'm not sure if it is suppose to in 8.1 seeing they put the logo back on. Any way after upgrading now none of the keys work except the number and letter keys. I went to pc settings and turned on the sticky keys, still don't work. No combinations of any keys work. P.S. Do NOT upgrade to win 8.1 , if you do there is no way to uninstall it. It's not worth the aggravation it has caused. Being that a half dozen other things don't work.