Some of my laptop keys are not working. At all.

[mattrickman]

I recently had to take my Lenovo e520 laptop apart to install a new DC-in Lan Board card. Anyways I noticed a couple days later that some of the keys on my laptop were not working. I don't know if some of the hardware got messed up while i was installing the new board or what.

The keys that are not working are: The alt key, windows key, the right arrow key and the up arrow key.

Any help would be appreciated. If I plug in a usb keyboard the keys will function on the usb keyboard but not on the laptop keyboard.

 

[boosted1g]

Power off PC and check and make sure ribbon cable is inserted fully, and that it is free from damage.

Otherwise you might need to replace keyboard.