Bios update caused reboot loop (b450m pro/ryzen 3

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   I'm not very advanced with computers obviously though I did build my current system. B450mpro with ryzen3 Picasso.

Unfortunately I've been having sound issues and a dpc latency monitor told me to update the bios.

I tried updating from 4.3 to 4.9 today with a flash drive. It said the programming was successful but when I pressed enter to reboot it wouldn't boot up. I get the blue power light for 10 seconds then it turns of and on again ad nauseum. No boot screen at all.

I tried clearing cmos by taking out the battery and also putting a dime on three clearcmos pins on the motherboard but no luck.

Does anyone have any ideas or am I stuck sending the motherboard back to as rock as an rma?

Thanks.

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Big_al72 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Feb 2021 Location: ny Status: Offline Points: 3	Post Options Post Reply Quote Big_al72 Report Post Thanks(0) Quote Reply Topic: Bios update caused reboot loop (b450m pro/ryzen 3 Posted: 11 Feb 2021 at 9:37am
	I'm not very advanced with computers obviously though I did build my current system. B450mpro with ryzen3 Picasso. Unfortunately I've been having sound issues and a dpc latency monitor told me to update the bios. I tried updating from 4.3 to 4.9 today with a flash drive. It said the programming was successful but when I pressed enter to reboot it wouldn't boot up. I get the blue power light for 10 seconds then it turns of and on again ad nauseum. No boot screen at all. I tried clearing cmos by taking out the battery and also putting a dime on three clearcmos pins on the motherboard but no luck. Does anyone have any ideas or am I stuck sending the motherboard back to as rock as an rma? Thanks.

ThreeDee Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 24 Jul 2019 Location: Billings,MT Status: Offline Points: 2396	Post Options Post Reply Quote ThreeDee Report Post Thanks(0) Quote Reply Posted: 11 Feb 2021 at 6:02pm
	try booting with just 1 stick of RAM in slot A2 ..did you have the power unplugged from PSU (or switched off) when you tried clearing the CMOS?
	\|Ryzen 5 5900\|ASRock X570 Taichi-BIOS 4.60\|2x16GB HyperX Predator RGB 3200@3600 1:1 IF\|ASRock RX 6700XT\|2 x PCIe 4.0 M.2 Drives for OS & Games\|850 WTT Seasonic 80+ Titanium PSU\|Noctua NH-D15\|

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22748	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 11 Feb 2021 at 11:45pm
	Try what ThreeDee suggested and when you clear CMOS follow this little guide: http://forum.asrock.com/forum_posts.asp?TID=630&title=how-to-clear-cmos-via-battery-removal If that doesn't get you up and running again contact ASRock Tech Support here: https://event.asrock.com/tsd.asp