My bet still lies on the connector not being seated. Most of the laptops I've seen have a pull out latching device inside the connector. It pulls out about 1/16th of an inch to let the ribbon insert easy. Then once it's seated you push the latch back inside to secure the ribbon. They are sometimes hard to tell if its that kind of connector so look close! And I'm sure you already checked, but make sure the ribbon isn't backwards or upside down. With a laptop, they shouldn't have enough length on the cable to be inserted upside down, but I'm not familiar with your model. Let me know how it turns out.
Tried to re-set the ribbon but it is not working. don't know what else todo other than order another keyboard and see if that one works......? Anyone else have any other suggestions?
Daniel