I was testing running Linux on my Larkbox and I noticed that Linux wasn’t seeing the fan so I changed a few things in the bios and also changed the OS Type in the bios to Linux.
As soon as I saved and rebooted, the Larkbox became 100% unresponsive.
No HDMI, no USB, etc.
Power button turns on the blue light, holding power for 3-5 seconds turns is back off.
I found and unplugged the battery to see if the BIOS would reset and no such luck (UEFI often stores BIOS config in flash)
I’ve held down the power button for 30-60 seconds to see if that would trigger a reset (like a phone or tablet might) with no luck.
My research (sadly after the fact) indicates that other Chuwi devices also suffer from this black screen of death when you change the OS type to Linux, so I’m guessing that’s what happened here. Those devices (usually tablets) seem to have a way of doing a factory reset with power and volume buttons, but of course the Larkbox doesn’t have volume buttons.
There is a “M+” and “M-” pad on the motherboard that I thought might be “memory reset” but I didn’t want to further risk the device. I did not see any other buttons or microswitches that might be a “reset” but it’s possible I missed it.
Does anyone know the process to factory reset the BIOS?
Thanks in advance!