PC Turns on and off repeatedly after flashing BIOS with an older version

Jun 8, 2018
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Hey Guys,
I recently flashed the BIOS on my new ASROCK AB350M-PRO4 motherboard. Now what I didn't know is that I didn't need to flash it. I bought an RYZEN 3 2200G CPU to go along with it and I was told that the motherboard required a BIOS flash to support it. So what ended happening was me flashing the bios to an older version (from 4.50 to 3.40) as the website stated I had to flash to 3.40 before flashing to 4.50. Turns out, the motherboard BIOS was already the correct version. So what happens is that now when I attempt to turn the system on, it turns on and then off after 30 seconds before turning back on again and then doing the same thing. It gives no display ( tried using onboard graphics as well) and I cannot reach the BIOS to change anything.

Here is what I have tried so far,

* Removing the CMOS battery for a couple hours
* using the jumper to reset the BIOS
* Testing the system outside the case
* Removing all SATA cables
* Making sure it isn't RAM problem
* Removing the GPU
* Checking the PSU and it's cables

Thanks for your help guys!
 
At this point your motherboard is not going to boot. The RYZEN 3 2200G needs BIOS version 4.50 to work. You should contact ASRock Technical Support and explain your problem. They may offer to RMA your motherboard, or advise you to contact AMD and request a free "Boot Kit" through the mail.