I recently moved to another state and upon plugging my PC in after the drive, it failed to move past the manufacturer's splash screen. Not being the smartest of people, I turned it off and tried again.
This time (and every time since) my keyboard lighting comes on, but numlock etc do nothing. There is no manufacturer splash screen. There is no further output from the machine. The motherboard has LEDs, which seem fully functional.
As far as I can see there's no readout for post codes and I don't have a speaker handy, but I can probably find one in a store around here. I also don't have another cpu handy, which I've seen suggested in other threads. Maybe time for an upgrade from skylake.