boot loop after Asrock b450 pro4 Bios update

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   Hi,

I have a problem after updating bios from version 3.90 to 4.80. 
A Few days ago I was updating bios to 4.8, the process was fine till completed and required to press Enter to reboot.
But after that, the PC keeps restarting again and again. there is no signal to monitor.

As your information, I am using AMD Ryzen 3 3200g, DDR4 2133 MHz.
I tried a method such as: unplug the power cord and remove the CMOS battery to reset it and so on, but still didn't work. 

Anyone has the same problem and how to solve it? any help appreciated 

Thank you.

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toolman Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 18 Jun 2021 Status: Offline Points: 20	Post Options Post Reply Quote toolman Report Post Thanks(0) Quote Reply Topic: boot loop after Asrock b450 pro4 Bios update Posted: 18 Jun 2021 at 5:57am
	Hi, I have a problem after updating bios from version 3.90 to 4.80. A Few days ago I was updating bios to 4.8, the process was fine till completed and required to press Enter to reboot. But after that, the PC keeps restarting again and again. there is no signal to monitor. As your information, I am using AMD Ryzen 3 3200g, DDR4 2133 MHz. I tried a method such as: unplug the power cord and remove the CMOS battery to reset it and so on, but still didn't work. Anyone has the same problem and how to solve it? any help appreciated Thank you.

zzu Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 16 Jun 2021 Status: Offline Points: 405	Post Options Post Reply Quote zzu Report Post Thanks(0) Quote Reply Posted: 18 Jun 2021 at 5:48pm
	removing the knob cell battery is not enough. you must also short the jumper for full 5 seconds.

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 18 Jun 2021 at 9:02pm
	did you check the bios notes ? there is a chance the 3200g has been removed from the support list for the later 4.8 bios other than that i would make a guess the ram stick isnt playing nicely with the new bios
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

zzu Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 16 Jun 2021 Status: Offline Points: 405	Post Options Post Reply Quote zzu Report Post Thanks(0) Quote Reply Posted: 19 Jun 2021 at 1:14pm
	I read too that the newest UEFI wares actually do no longer support the oldest Ryzens. Not so ideal.