The system shows no post after the BIOS update.
You're unsure about something.
We need patient's age, gender... Sorry, I mean the model of CPU, motherboard, what version of BIOS you flashed...
Ryzen 5 5600G M.IIS motherboard B550 gaming plus
It seems your CPU might have malfunctioned.
Yes, I've checked if the BIOS settings were reset.