My Backspace, Backslash, Enter, Up Down and Right arrow keys, and my semicolin keys on my keyboard is not working anymore. I used to be able to fix it by gentlelling hitting my PC, or to slightly bend it (I know its not good). But now no matter what I do, it won't work. I now often have to pull out my on screen keyboard or use left arrow and delete key in order to undo my errors, and its painful.