You need to determine if the problem is with the membrane or the controller chip, you can do this by plugging in a USB keyboard. If that works fine then it's the keyboard and not the chip. Laptop keyboards are usually easy to replace and you'll find a guide on YouTube or simply by doing a Google search but if you become unstuck let me know and I can help you out. The best way to find a keyboard is using Google shopping, just type in your laptop model + keyboard i.e. Toshiba satellite Pro A1 replacement keyboard OR you can remove it and directly type in the part number from the sticker on the bottom of the one you remove. Just google search then choose "shopping" from the top menu to get to their shopping page.
Edited by Graham_Wirral (30th May 2015 12:22pm)