Title, basically? Thank you for help, if you might know where Asrock keeps a complete list, haha.

Working with a B550 pg velocita and trying to upgrade the cpu from a ryzen 3 (3000-something) to a ryzen 5 3600. It's working with the ryzen 3. The code showing up on the mobo's led screen for debug codes is 7C, but I can't find what it means anywhere.

Bios is updated to the latest because of efforts to use a ryzen 5 5600x with it, but kept getting F9 code before and after bios update.