I have had this problem on and off with this laptop for some time. Sometimes I could fix it with just flipping the laptop all the way over and back a few times and the laptop keyboard would come out of tablet mode and work. You can see for a very few short seconds the keyboard will operate during initial boot process however during the boot process it disables. Now all of the time. Is there a Bios setting anyone knows to turn on permanently? I really hate the tablet mode as it is and certainly can live without it.