Black screen after enrolling/resetting platform key

Hello guys, so the last day i tried to play valorant but it asked me for uefi secure boot and i quickly went into the bios settings and turned it on but it asked me to update platform key. So i searched for it and pressed update/reset or enroll i dont really remember what it said there. As soon as i did that my screen went black i thought its gonna restart or sum but it never did. Tried restarting but still black screen is what i got. This morning i tried to take out the gpu and after that the cmos battery waited for around 11 minutes plugged everything back in and it still didnt work. Tried it once again but i didnt put in the gpu and it still wasnt working. Fans work, rgb works and if i plug in my keyboard the rgb on that works too. Have searched for hours what it could be the problem some even said its a dead mobo but idk. Please help as i cant really afford to bring it to a service rn.

Specs: Gigabyte A620M-DS3H Ryzen 5 7600X Rtx 4070 super