I'm getting a bit frustrated with an issue my ASUS X550J has been having for months now. Occasionally, it will randomly stop acknowledging when I press certain keys, namely backspace,2, 3, and sometimes P. I have no idea what is causing it. I've opened it up and cleaned out the connectors to the motherboard with q-tips and alcohol, but that doesn't seem to do it. Anyone else have any idea what could be causing this? I tried reinstalling drivers a while ago but that didn't seem to work.