This page describes how to disable AMD Secure Processor aka AMD Secure Technology. Please read the whole page before you begin. The AMD PSP is a security risk.
Don't forget to set a secure BIOS supervisor password!
Attention: If you don't see any option to disable AMD PSP, check if you have installed the latest BIOS version.
Boot into BIOS and search for an entry BIOS PSP Support and disable it. It should be in menu Advanced.