Black screen when starting the laptop - the BIOS does not see it, the W7 system loads. What to do?

Question

BIOS

In a nutshell, the Lenovo Z580 laptop starts up and runs fine. But after I changed the matrix, I can’t see the progress of starting the laptop: neither the logo, nor the system boot, the BIOS is also not displayed. It feels like when you get into the BIOS, it sort of enters, but nothing is displayed on the screen. I still can’t understand what it is, maybe it has something to do with the display of the OS itself on the screen and the usual DOS, which the matrix does not see for some reason ..

Answer 1

Try resetting or updating the BIOS.