Mobo MSI B550-A PRO password popup

[Cerberuska]

Hello guys,
I have interesting problem. My MoBo MSI running on Ryzen 7 w/o graphics just good. I swapped to Ryzen 5 5600G and on the boot I stuck with screen on picture. Enter Password. I checked BIOS setting with Ryzen 7, no security is enabled, BIOS password or TPM.
BIOS I updated to last one.
any suggestions?
And same thing for two different 5600G, and yes, MoBo supposed to support it.
Thank you

[stj]

interesting issue.
try setting a password with the 7 and then put the 5 in - if it asks for the password you can ener what you set - then remove it after and reboot.
see if it fixes it - though i dont know why going between a 5 and a 7 would do that.

[Cerberuska]

Hi,
Thank you for suggestion. I went to MoBo. Set password with ryzen 7, reboot with 7, same password screen, enter password and it unlock boot. Then I put 5600G, same password screen, but invalid password. Downgrade bios… still no luck. Never seen that.

[DynaxSC]

Did you try to depower the board completely i.e. disconnect power cables and remove RTC battery ?

Setting date in Bios, maybe there is some bug related with some bios setting just an idea ?

Programming a stock bios with HW programmer, sometimes bios might be corrupted in some special way, and upgrading/downgrading might not help as it not necassarilly writes the complete bios image.

[Cerberuska]

Hi,
depowering I did try. No success. Looks like glitch, I spoke to msi, they want me to send MoBo to them to remove password. They are saying it is unusual. But paying shipping to US from Canada, it is not worth. So next step , I can try to reprogram bios thru programmer, but there is also EC. I tried set password for Admin, non erasable, but when 5600G is in, ignoring my set password. Then I removed password with Ryzen 7, then put back 5600G and still wants password. Ryzen 7 not require password, but when I put 5600G it requires password. I tried all different versions of bios thru flash options, thru button on the back without processor, or thru BIOS . Still same issue.
I can desolder and solder Bios chip and try thru programmer.
or maybe use Ryzen 7 , install windows and try to use some utilities.

[DynaxSC]

Only logical conclusion is the 5600G works differently then the R7, maybe you found a bug in the AMD processor or the 5600G has really some minor demage in the computing logic and makes some errors in data processing.

[Cerberuska]

I have two different 5600G different batch. Both working great in ASRock fatality. Friday I will do more investigation. Will pull up bios flash, clear it, program it using programmer and we will see. I will keep posted. Thank you for all support

[Cerberuska]

Update: I removed Bios chip, erased it, and programmed with online bios from msi. And no more asking for password. Thanks for all suggestions and advices.