Dear Darky
Thank you for posting in the microsoft community.
Usually upgrading to WINDOWS 11 requires hardware support and the BIOS to be set up correctly.
In most cases you can turn on TPM, turn on CPU Virtualization Platform Technology, and turn on Secure boot to ensure that you can upgrade to WINDOWS11 properly.
Usually they are in the advanced settings of the BIOS.
Of course, there are some unexpected situations that may cause you to be unable to upgrade to WINDOWS11 even if you have turned on these BIOS features correctly, so I'll give you some temporary workarounds that I hope will help you.
Press WIN+R and type regedit - locate the
Computer\HKEY_LOCAL_MACHINE\SYSTEM\Setup
Select setup-right click-add-item-labconfig
In the blank area on the right-right-click-New Dword-BypassTPMCheck Value 1
In the empty area on the right-right-click-New Dword-BypassSecureBootCheck Value is 1
When finished, reboot the computer and try to upgrade WINDOWS 11 again.
I hope the above information can help you.
Disclaimer: Generally, modifying registry subkeys or work group is intended for advanced users, administrators, and IT Professionals. It can help fix some problems, however, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For further protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click here to view the article.
https://support.microsoft.com/en-us/topic/how-to-back-up-and-restore-the-registry-in-windows-855140ad-e318-2a13-2829-d428a2ab0692
Best Wish
Shawn Z | Microsoft Community Support Specialist