Hi samuel mallon,
Welcome to Microsoft Community.
If you install Windows 11 on a device that does not support TPM 2.0, you may encounter some strange issues.
When installing Windows to a UEFI-based device, you may need to format and reassign the disk to GUID form.
UEFI/GPT-based hard drive partitions | Microsoft Learn
In the worst-case scenario, you may need to reformat your disk and reinstall Windows 11 from scratch.
Would you mind sharing with us the original link to the article you read?
This may help us learn more about the process your device went through to upgrade to Windows 11.
If I misunderstand your situation, feel free to correct me and share the information.
Best Regards,
Kyo - MSFT | Microsoft Community Technical Support