Windows 11 KB5029351 update causes «unsupported processor» BSOD error

Si usted es uno de los muchos usuarios que instaló la última actualización KB5029351 de Windows 11, es posible que haya encontrado un problema frustrante: una pantalla azul de la muerte (BSOD) con el mensaje «procesador no compatible». Este error ocurre cuando Windows 11 detecta que su CPU no cumple con los requisitos mínimos para el sistema operativo y le impide iniciar Windows.

This is a serious problem that affects many users who have older or incompatible processors, such as Intel Core i5-6600K, AMD Ryzen 5 1600 or Intel Pentium G4560. These processors were able to run Windows 11 before the update, but are now blocked by the new security feature that checks CPU compatibility.

Fortunately, there is a possible solution to fix this problem and restore your Windows 11 system. Here are the steps you should follow:

Restart your computer and enter the BIOS setup. You can do this by pressing a specific key during the boot process, such as F2, F10 or Del. The exact key depends on your motherboard model and manufacturer.

2. In the BIOS settings, look for an option called «Secure Boot» or «UEFI Boot». This option may be located in different menus, such as «Security», «Boot» or «Advanced». Disable this option and save your changes.

3. Restart your computer and boot from Windows 11 installation media, such as a USB flash drive or DVD. You can create a Windows 11 installation media using the media creation tool on the Microsoft website.

4. When you see the Windows setup screen, click on «Repair your computer» in the lower left corner.

5. On the next screen, click on «Troubleshoot problems» and then «Advanced options».

6. In the advanced options screen, click on «Command Prompt».

7. In the Command Prompt window, type the following commands and press Enter after each one:

bcdedit /set path {actual} \winwindowsystem32\winload.efi

bcdedit /set {actual} nx OptIn

bcdedit /set {actual} pae ForceEnable

These commands will modify the boot configuration data (BCD) and enable some features required for Windows 11 to run on unsupported processors.

8. Close the command prompt window and restart your computer.

If all goes well, you should be able to start Windows 11 without the BSOD error. However, this solution is not guaranteed to work for everyone and may cause some stability or performance issues. Therefore, we recommend that you back up your important data before attempting this solution and consider upgrading your processor or switching to Windows 10 if possible.

We hope this blog post has helped you resolve the BSOD error in Windows 11 update KB5029351. If you have any questions or comments, please leave a comment below.

Thank you for providing the update on the Windows 11 KB5029351 update and associated issues. It appears that Microsoft is actively investigating the «UNSUPPORTED_PROCESSOR» bug that causes the Blue Screen of Death (BSOD) on devices with supported processors. It is comforting to know that Microsoft is working to fix the problem and has taken steps such as stopping the release of the problematic update on affected devices.

For users facing this problem, Microsoft suggests several steps:

1. **Report the problem**:

Microsoft encourages users to report the problem through the Feedback Hub application. This helps them gather more information about the problem and helps them resolve it effectively.

2. **Automatic uninstallation**:

If the computer continues to crash with BSOD errors, the KB5029351 update may automatically uninstall itself to allow the system to boot normally. This is designed to prevent continued failures caused by the problematic update.

3. **Manual uninstallation**:

If the update does not uninstall automatically, you may need to start the computer in the Windows Recovery Environment (WinRE) to uninstall the KB5029351 update in Windows 11. For Windows 10, specific instructions are provided.

4. **Processor manufacturer’s support**:

Microsoft recommends that users contact the processor manufacturer if they encounter a problem. This suggests that the problem may be specific to certain processor models.

5. **Mitigation by Microsoft**:

In the subsequent update, Microsoft clarified that the «UNSUPPORTED_PROCESSOR» error was not caused by problems in KB5029351. It is limited to a specific subset of processors. The company is working with device manufacturers to find a solution. During this process, they temporarily stopped the implementation of KB5029351 on devices that had problems.

It is good to see that Microsoft is taking quick action to address the issue and provide support for users facing these problems. Users should watch for further updates from Microsoft on the resolution of this issue and follow the steps recommended by the company.