The keyboard & mousepad on my HP laptop have stopped working. If I plug in external devices they work fine, & if I use the diagnostics function the devices test fine (& I can use the built-in keyboard to access the Diagnostics function). Its only when I get to Windows 10 that they stop working. Previously I managed to boot into Safe Mode, uninstalled the devices through the Device Manager, shut down & then they came right with the newly installed drivers, but if I did a restart they'd go back to not working again. I've looked at other laptops of the same model & they all have HID devices listed under Device Manager even when no external devices are plugged in, so any ideas why are these things causing me so much trouble on this laptop?