i tried freaking everything :(

spec: motherboard aorus z590 ultra cpu i5 11400f gpu rtx 2070 super 2x8 ram ssd Hello, i make myself custom pc few months ago, when i build it i got gpu led on, i bought then new cable it worked, but today everything worket fine to moment i tried instaling valorant, but i got secure boot...

Earlier I was having problems with a program called Nox. It was stuck in fullscreen and was unable to get out of fullscreen. Tried Alt F4, Alt+Ctrl+Del, etc. Basically pressed every key on my keyboard and what ever I pressed, the backlight on my keyboard turned on and now I cannot get them to...