i would update the BIOS first to see if UEFI is available after the BIOS update.
you can install Windows 11 24H2 using the MBR boot .. but ..
you will need to format the drive to a GPT partition for Windows 11 24H2 to use the MBR.
www.partitionwizard.com
you will have to do that while doing the clean install of Windows 11 24H2.
best of luck, Steve ..
you can install Windows 11 24H2 using the MBR boot .. but ..
you will need to format the drive to a GPT partition for Windows 11 24H2 to use the MBR.

Watch: Can Windows 11 Run on MBR? Get the Answer Here
This article describes whether you can install Windows 11 on MBR drive and how to perform Windows 11 MBR installation with the detailed tutorial.
you will have to do that while doing the clean install of Windows 11 24H2.
best of luck, Steve ..
My Computers
System One System Two
-
- OS
- Win 11 24H2 Home
- Computer type
- PC/Desktop
- Manufacturer/Model
- HP 24" AiO
- CPU
- Ryzen 7 5825u
- Motherboard
- HP
- Memory
- 64GB DDR4 3200
- Graphics Card(s)
- Ryzen 7 5825u
- Sound Card
- RealTek
- Monitor(s) Displays
- 24" HP AiO
- Hard Drives
- 1TB WD Blue SN580 M2 SSD Partitioned.
2x 1TB USB HDD External Backup/Storage.
- Internet Speed
- 1GB full fibre
- Browser
- Edge & Thunderbird
- Antivirus
- AVG Internet Security
- Other Info
- Mainly Open Source Software
-
- Operating System
- Ubuntu 22.04.5 LTS
- Computer type
- Laptop
- Manufacturer/Model
- Dell 13" Latitude 2017
- CPU
- i5 7200u
- Motherboard
- Dell
- Memory
- 16GB DDR4
- Graphics card(s)
- Intel
- Sound Card
- Intel
- Monitor(s) Displays
- 13" Dell Laptop
- Hard Drives
- 250GB Crucial 2.5" SSD
- Mouse
- Gerenic 3 button
- Internet Speed
- WiFi only
- Browser
- FireFox
- Antivirus
- ClamAV TK
- Other Info
- Mainly Open Source Software