PC Won't Boot After Enabling Secure Boot

Hello,

As for many others I installed the beta for Battlefield 6 on my PC. It wants us to enable Secure boot, and I did that as many others did. It seems like it should have been a simple toggle on/off right? Nope. My PC has been unbootable since Thursday. And I can't even get to BIOS screen cause motherboard HDMI won't display anything (no black screen either.)

Gigabyte Z390 GAMING X

BIOS F11

•Secure Boot Enabled

Errors: PC won't boot. Motherboard gives 5 beeps.

Tried running BF6. Said I needed secureboot. I went to BIOS, tried turning it on. BIOS I needed to disable CSM. I disabled CSM. Tried to turn on Secureboot. BIOS said to apply CSM off by restarting. Restarted. Tried enabling secureboot. Said something about keys. I enabled factory keys (808 was the number I think). Went to enable Secureboot. Secureboot enabled. Yay! Go to start PC. Won't boot. Black screen. Motherboard beeps 5 times.

Reddit says take out GPU. Still nothing. Reddit says clear CMOS. Took out CMOS OVERNIGHT. Put back in. Still 5 beeps. Reddit says short out CMOS Pins. It turns on then immediately turns off while shorting out. Wait a few seconds. Turn back on. Still 5 beeps.