Dennis has a Toshiba Satellite that died a month after the warranty. But he says it's likely due to a virus because it seems that the keyboard has been compromised and all the keys are scrambled when he types. Leo says that it's probably not a virus, It could be a stuck key or a short circuit. Leo says to make sure the keyboard profile hasn't changed. See if another keyboard profile will work. Using a restore point could undo it. Also check out sticky keys in accessibility options. Leo says it's likely more that than any virus because Dennis plugged in an external keyboard and it worked just fine.