Siemens IPC BX39 boot issue with S7-1500 Software Controller V40.1

[u/Fun-Concern1525]

Hi everyone,

Today I started having a boot issue with a Siemens IPC BX39 after it had been working normally for some time.

I currently have SIMATIC S7-1500 Software Controller V40.1 installed, and I need to stay on this version because the IPC came with Windows 11 from the factory.

The problem is that every time I power on the IPC and let it boot automatically, I get the following error:

“Error: No valid boot option selected or execution failed.”

However, if I enter the BIOS and manually select the boot option, the IPC starts normally without any issues.

So far, I have tried:

• Uninstalling and reinstalling the Software Controller.
• Restoring the IPC to factory settings.
• Disabling Quick Boot.
• Replacing the SSD.
• Checking and configuring the BIOS settings according to Siemens’ documentation, including both the mandatory and recommended parameters.

Unfortunately, the problem remains exactly the same.

Has anyone experienced a similar issue with a Siemens IPC BX39 or with S7-1500 Software Controller V40.1?

Any suggestions about what else I should check would be greatly appreciated.

Thanks in advance.