Primux IOXBook 1102F 1402 and similar black screen!

Primux IOXBook 1102F and similar

Symptoms:

The computer does not turn on the screen, and only the blue Power LED is visible.

We can only turn it off by pressing the Power button for a few seconds.

The BIOS needs to be reset, but the screen does not work.

How?

When booting, press ESC.

Press F3, wait 3 seconds.

Press ENTER

Press F4, wait 3 seconds

Press ENTER

If it doesn’t reboot on its own after a few seconds, it shuts down and starts up, and it should work.

An external USB keyboard might be needed to do these steps, but to me it has worked with the laptop keyboard.