AMD opened up a support bulletin for users that have issues with Ryzen 5 2400G and Ryzen 3 2200G processors not booting, a number of users have contacted AMD as they have bought one and paired it with an AM4 motherboard to find out they cannot get it running.

Socket AM4 has been around since early 2017 so it was expected to see some issues at some point for some processors. So in pretty much most cases the issue is simple, people bought a product that did not get the new compatibility firmware for Ryzen 2000G processors. The boot up issue likely means a system is running an early BIOS that does not have support for newer processors.  This can be resolved by updating the motherboard BIOS to the latest version, which can be performed by using any processor supported with the currently installed BIOS.

For a list of supported processors per BIOS version, please refer to the CPU Support List document available on the motherboard manufacturer's website.  BIOS download and installation instructions are also found on their websites.

Workarounds

The following workarounds may be feasible for affected users, depending on their individual circumstances, and should be considered before applying the boot kit solution detailed below:

Update from Retailer

1. If the motherboard was purchased through a computer parts retailer, check with the retailer to see if they can facilitate the BIOS update at their location. There may be a charge for this, or it may be offered at no cost.
   
   
2. If you have access to a processor supported on the current installed BIOS, use it to perform the BIOS update, then swap out the processors when the update process is complete.

For a list of supported processors per BIOS version, please refer to the CPU Support List document available on the motherboard manufacturer's website.  BIOS download and installation instructions are also found on their website. If these workarounds are not feasible, please see the sections below for a solution.

Original Manufacturer Replacement

The Original Design Manufacturer (ODM) of the motherboard will support affected end users with an RMA exchange for a compatible motherboard, upon request.  Affected end users are recommended to contact their local representative for the motherboard manufacturer to exchange their motherboard.

Boot Kit Solution

AMD will provide affected and qualified users a boot kit to perform the BIOS update on their motherboard. This solution is offered through AMD warranty services and is available only for affected and qualified users of this specific boot up issue.  This boot kit is free of charge.

To obtain the boot kit, please carefully follow these instructions:

1. Go to the AMD online warranty claims page: https://support.amd.com/en-us/warranty/rma
2. Fill in your full contact and product details
3. In the Problem Description field enter "Boot kit Required" (without quotes)

Once the claim is received and approved, confirmation details and boot kit instructions will be provided in a follow up email.

AMD Opens Support Bulletin for Users that cannot get new Ryzen 2000G APUs working on Mobo