Failed to load BIOS

[WiseSalmon]

Hello. I have installed Ubuntu on my laptop alongside Windows 10. And today I have decided to remove it completely (deleting its partition and its folder in "EFI" partition; this is not the first time I perform these actions). After that I have removed it from boot list in BIOS.

After rebooting... nothing happens. There is just a black screen, no any sounds, the display is just turned off. The keyboard illumination glows for a few seconds. Just nothing happens. I tried to make BIOS reset by removing the battery, the CMOS battery and unplugging the AC adapter (for one hour). No result. There is just a black screen, without any sign of BIOS appearing on the screen. Even LED-backlit doesn't turn on

The inicator lights work as usual, as well as the cooler and the optical disk drive

 

[Gagan sarpanch]

i think your motherboard is damage
but not sure

 

[WiseSalmon]

i think your motherboard is damage
but not sure

I don't think it is, because before I had rebooted laptop after changing settings, everything was fine

 

[smorizio]

screen backlight may have failed. use the funtion key to turn on ext video port. conntect the laptop to a monitor.