HP 255 G9 (50J78AV) - does this device has UEFI?

[BlueWinds]

Hello! I entered BIOS to check a few things and I couldn't find an option to switch to UEFI. Does this model even have UEFI?

[Huffer]

How did you enter BIOS? UEFI is usually tap esc as you power up then F2 at the prompt. If all else fails UEFI can be loaded onto a bootable USB stick and run from there. 

See pp. 66-71 of the Service Manual:

Manual 

[TzortzisG · Accepted solution]

 Hi BlueWinds.

There seems to be some misunderstanding here. Modern laptops (post 2011-2012) that came after windows8 was introduced, don't have the old-fashioned BIOS. We still sometimes CALL it BIOS, but it's actually UEFI. When you entered the BIOS, you actually entered the UEFI setup options. What modern laptops DO have, is a compatibility mode called LEGACY boot, that mimics the old legacy BIOS. However, this was pretty much until 2020 for Intel laptops, and I'm not really sure if this option is still available on the AMD laptops. Read these two articles to understand more about UEFI in your laptop:

https://www.hp.com/us-en/shop/tech-takes/what-is-uefi

https://support.hp.com/us-en/document/c07054518

To find out if your laptop is actually using the legacy BIOS boot compatibility mode, or true UEFI boot, you can use one of the 5 methods explained here: Check if Windows 10 is using UEFI or Legacy BIOS. 

[BlueWinds]

Ok so I have UEFI apparently. I was confused because UEFI on this laptop is so basic and old-looking. It is almost the same as BIOS on my first Windows XP PC from 20 years ago. No, actually it has fewer options than my old PC. I was happy to find the boot order lol. Anyway, thank you all for the help.