computer turns on for 10 seconds but screen remains black

When I open my computer lid, it doesn’t start up as it’s set to do so I press the power button. The light comes on and the fan whirs quietly but the screen stays black, then the power button fades. The computer’s charged, that light, plus the power light, on the side of the computer both work.

I first tried the restart of holding the power button for 30 sec, I’ve also tried ctrl + shift + esc, ctrl + alt + del, and f8, but nothing works since the screen won’t turn on. I removed the bottom to see if anything was awry, and the inside looks normal. There was some dusty mold on the plastic shell on the interior, but that’s probably been there for quite a bit.

FYI I did finally update to Windows 11 last month, and the problem began abt 2wks later.