I have the above refurb that is 2 months over warrenty and cannot obtain support from HP as a result. The side-to-side directional arrow keys aren't functioning (not sure if they ever did to be truthful). I checked the driver for the keyboard and checked for updates, seems ok. A bit hesitant to delete the driver and re-install but will do so if necessary (my luck I would lose my keyboard althogether I also lost the scroll in the mousepad but that WAS recent and the Recovery Manager re-installed that with success. I would try addig an external keyboard, but don't have one that's USB.
Advice on where to go with this would be greatly appreciated. I notice other keyboard questions on notebooks haven't received much response, so hoping I have better luck.