After pressing uefi firmfare settings, the screen stopped working, what should I do?

Question

linux

The boot of the laptop stopped working, the hard drive was not visible in the BIOS. I inserted a bootable USB flash drive and accidentally clicked uefi firmfare settings. After that, the laptop worked for some time, but there was a black screen. I decided to reboot, also a black screen and no bios loading. Pulled out the battery for 10-20 seconds, nothing

Answer 1

I solved the problem, I flashed the bios through a USB flash drive. I uploaded a file for my laptop with the .fd extension to a USB flash drive, turned on the laptop via fn + esc and after 3 minutes it was flashed automatically.

Answer 2

accidentally clicked on fn + F (th thread there) turns off the display?

Answer 3

You can’t just throw off the battery in 10 seconds. it is necessary to remove it and let the car lie down, preferably longer. Night for example.
Specify the battery - is it a battery from the motherboard or a battery?