Unable to boot after Bios Update B450M-A Pro Max

[mullafab156202dc]

I flashed the 7C52v3F1(Beta version) bios on my MSI B450M-A Pro Max and now my pc won't at all boot.

 

[Alan J T]

How did you manage to flash the Bios?

With a ch341a usb programmer programmer?

Please start a new topic for assistance