UEFI problem

There's likely no UEFI bootable OS on your hard drive or SSD.

@ejn63​ 

I did not understand how it belongs to hard drive or SSD?

There needs to be a UEFI boot file on the storage drive in order to boot the system in UEFI mode.  

@ ejn63 

How do I know if this computer supports UEFI?

@ ejn63 

If my motherboard does not support UEFI then how come in this picture it says uefi but it doesn't say that it recognizes any hardware on this computer?

Clearly the system does support UEFI, but your post is so vague, and you're not reading the replies that assisting is all but impossible.

In order to boot a UEFI system, you must have a UEFI-compliant boot loader on the hard drive or SSD, or you will see exactly what you see there -- nothing listed as bootable.  

If the system was running in CSM/Legacy mode, you cannot simply switch modes without reloading the operating system after repartitioning and reformatting the drive in GPT mode (MBR mode won't boot a UEFI system).

@ ejn63 

How to change MBR to GPT without losing data?

@ ejn63 

If I want to install an iso file for an operating system through a USB flash drive, through the bot, then I get a message that the computer does not support the MDR storage format, so what to do?

Windows has a utility called MBR2GPT that can do the job.  That said, do not start the process without a full, verified backup of the data -- you can lose everything in the process.

You've still left far too many questions unanswered in order to figure out what's happening.  Presumably, you mean MBR, not MDR -- but ISO files are not "installed" to a storage device.  They're written to a flash drive or other media, and used to boot the system to start the installation.

You can use a utility like Rufus or Balena Etcher to prepare the boot media, and there are dozens of other options as well.

@ejn63​ 

If I use MBR2GPT, then the UEFI in bios will recognize the hardware on this computer?

It's not the hardware recognition that's the issue -- it's that you don't have a UEFI-bootable drive.  Converting MBR to GPT is part of the task, but you also need to be running an OS that supports UEFI (i.e., 64-bit Windows 10 or 11 at present).  

You never posted the system model so the rest is open to question.

Do not proceed with the conversion without a full, verified backup. There is a not insignificant chance the conversion will fail and if it does, you can lose the contents of the drive.