Secure Boot Automatic Repair Loop

[DogChamp1160]

Hello everyone,

After watching the Windows11 upgrade video yesterday I went through the steps to activate secure boot on my system to prepare it for Win11. 

System: Win10 21H1 64bit, MSI B350M-Artic Mortar, Bios 7A37vAH, Ryzen 1600X, Radeon RX580, Crucial MX500 SSD, 16GB Crucial vengeance RAM 2666 (4x4)

 

After converting from legacy to UEFI via command prompt I restarted the system and was able to activate secure boot / deactivate CSM. Now the system is showing MSI Automatic Repair for a couple seconds before entering a reboot loop. Switching off secure boot also ends in a boot loop, but without the Automatic Repair screen showing up. Found this issue online, but they fixed it with a windows update, as mentioned above my windows was on the newest update. Anybody with the same issue? Does somebody know how to fix it without reinstalling windows? Thanks a lot for reading and for help in advance.

 

Greetings from Vienna,

Julian

[ImAlsoRan]

Can you try re-enabling CSM?

[DogChamp1160]

8 minutes ago, ImAlsoRan said:

Can you try re-enabling CSM?

Thanks for your reply. Yes, that's the same "Windows WHQL" toggle in the BIOS. It automatically activates CSM when disabling it.

[DogChamp1160]

Short update, I re-flashed the newest BIOS onto the board. For some reason that started the system again. The PC is now in UEFI+Legacy Mode, with WHQL& Secure Boot turned off. System Information App now shows "UEFI" instead of "Legacy" though. 

 

Kind of inclined to try to turn it on again. Thanks for reading, hope that helps someone.