In order for your CPU to run, you first have to do a BIOS update. Fortunately, the board can do a crashfree BIOS, but unfortunately this is hardly described in the manual (chapter 2.1). However, there is a separate BIOS update manual that you can download.
The procedure is:
Download the BIOS, rename it with the enclosed EXE file (or manually), copy it to a stick and switch on the PC and wait...

Erasing the CMOS is described in the manual (short-circuit 2 pins).

Here is the manual:
https://dlcdnets.asus.com/pub...