I'm working with a Logitech K200 keyboard. It's about a month or two old and it's served me very well. However, as of last night, whenever I use the Alt key extensively, it seems to get stuck. I can no longer type anything, and every letter instantly is used as a shortcut. The only way I can seem to solve it is by resetting the computer completely. This is starting to get extremely annoying, to say the least. Any ideas on what to do?