UEFI in green but not present

[bf1]

hwinfo64 v5.79-3390 portable

In the System Summary screen next to my bios, it has "UEFI" in green.

My bios doesn't support UEFI. If I boot into my bios, I have no uefi/legacy options at all anywhere in the settings.

In hwinfo if I go to motherbord > smbios dmi > Bios, I see:
UEFI Specification Support: Not Present

What further info do you need from me?

Thanks.

 

[Martin]

SMBIOS DMI information is often not reliable, there are also other indicators used to determine UEFI support.
Which mainboard do you have?

 

[bf1]

This is a 01HXXJ Dell board, BIOS version A05.

Windows 10 has also determined that this does not have UEFI capability - I used diskpart to clean the disk of all partitions, converted it to GPT, then installed Windows 10 Home. When I finally got back into Windows, it had installed as MBR. I did this a number of times to check I was doing it correctly, and verified that the disk was converted to GPT before I started each time. Windows just created the MBR and Windows partition, and none of the UEFI partitions.

 

[Martin]

Then there are probably some invalid indicators in the BIOS that confuse HWiNFO (probably some sort of pre-UEFI partial support).