I have a high end Acer laptop, couple years old. I opened it to fix a component the other day. After closing it everything was fine, but the touchpad and touch pad drivers were gone. I reconnected the cable ribbon on both ends 2-3 times. After deciding that the easiest potential fix was a replaced cable ribbon, I bought one and although it seems perfectly compatible, the touch pad still doesn't work. The ports seem fine and lock in place. What can I look for to make sure that the ports are okay?