I am having some issues with an HP 250 G8 laptop (4K803EA). The pc, when turned on, has the LED on but stays on a black screen. I opened the computer, and noticed that the fan spins for a few seconds after pressing the power button but then stops. I tried swapping ram with a working one taken from another laptop but nothing happens.
The only thing that seems working is the HP Bios Update utility, that I can open turning on the pc while pressing Windows + B keys, as described on HP website. It seems to complete flashing the bios with no errors, but then still no boot. I tried putting the bios files on a USB drive as well.