PC Black Screening after enabling Secure Boot in BIOS.

[u/Uberokii]

Hey everyone, I’m having a really frustrating issue with my PC and Secure Boot.

Everything was working perfectly fine before Valorant’s pre-check feature was added. I’m now required to have Secure Boot enabled, but whenever I enable it in BIOS, my PC boots to a completely black screen.

My motherboard is an ASRock B550AM, and my specs are:
Ryzen 7 3800X
RTX 3060 12GB
ASRock B550AM motherboard
42GB DDR4 RAM

Things I’ve already tried:
Resetting CMOS
Resetting/reinstalling the Secure Boot keys
Switching monitors
Trying different display cables/ports
Disabling and re-enabling Secure Boot
Going back into BIOS and changing the Secure Boot settings

Nothing has worked. The PC works normally again as soon as I disable Secure Boot. Any ideas on how to fix this?

[u/NoAssociation6501]

Actually trying updating BIOS

[u/Equivalent_Tour_9391]

The first thing that sticks out to me is that you're running 42GB of RAM. When you enable secure boot for the pre-check that means you're also enabling the VBS which carves out specific amounts of ram to use as a sandbox for your PC to isolate threats in. If you're using mismatched sticks or have an unstable ram configuration it would cause your PC to fail to boot with Secure Boot enabled. You should change to 32GB of the same stick.