Lenovo Y70-Touch - keyboard connector?

My Lenovo Y70-Touch laptop unfortunately either writes characters or letters by itself no longer work. The problem has been around for a long time, I have already set it up from scratch, it's not a virus. The keyboard can't be deactivated either. Hence my question, does anyone know which connector belongs to the keyboard so that I can unplug it and use an external one?

Not one that you can reach from below. You have to loosen the keyboard and loosen the ribbon directly under the keyboard…