AMD has a loaner program for third-gen Ryzen PCs that won't boot
Because of limitations in a motherboard’s BIOS, third-generation Ryzen chips may not boot with older AM4 motherboards. The solution? An exchange program that can solve what’s essentially a chicken-and-egg problem for users building their first Ryzen PC.
The problem can be traced back to the motherboard’s UEFI/BIOS. AMD pledged to make the AM4 socket backward-compatible all the way to the original Ryzen. Unfortunately, the amount of code necessary to accommodate all of the various microprocessor permutations has stretched the limits of what AM4 motherboards can handle.
That’s presented two issues. First, the latest X570 boards have dropped support for older chips like the first-generation Ryzen because of these limitations. But the opposite is also true: Consumers who buy the latest third-generation Ryzen processor may find themselves unable to boot their new chip when it’s paired with a cheap, legacy motherboard, including those powered by an X370 and B350 chipset.
Original Post By – PCWorld