Thanks for reaching out to Microsoft Q&A Forum. I understand that your Windows 10 PC reports it does not meet the minimum requirements when you try to upgrade to Windows 11.
Please make sure you already tried the Q&A Assist steps and reviewed the information shown there. In addition, please try the following.
Before that, to narrow this down a bit:
1, Is this a prebuilt PC or a custom‑built machine, and do you know the CPU model?
2, Have you ever changed BIOS/UEFI settings such as boot mode or TPM settings before?
In the meantime, you can try these steps:
1, Check whether TPM is present and enabled
- Press Windows key + R, type
tpm.msc, and press Enter - Confirm that the specification version shows 2.0 and the status is ready for use
2, Verify boot mode and disk format
- Press Windows key + R, type
msinfo32, and press Enter - Check that BIOS Mode shows UEFI
- If it shows Legacy, the system will not be eligible for Windows 11
3, Confirm Secure Boot status
- In the same System Information window, check Secure Boot State
- If it shows Off, restart the PC and enable Secure Boot in BIOS/UEFI
4, Check system disk partition style
- Right‑click Start and open Disk Management
- Right‑click Disk 0 and select Properties, then Volumes
- Confirm the partition style is GPT, not MBR
5, Recheck eligibility after changes
- Restart the PC after making any BIOS or firmware changes
- Open Windows Update again and check if the Windows 11 upgrade becomes available
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