Keyboard My IBM R50E laptop has a problem with its keyboard. my right click key, down arrow, delete key, numberlock key does not work and there is a dot noise everytime i press these keys. I've open the keyboard and try to vacuum the dusty keyboard but it doesn't work. there is a connection between the keyboard and the laptop itself there is a slot and with a keyboard cable i've touched it do that damage the keyboard and worse my usb mouse now is moving and clicking by itself.