While installation of Windows you can receive error – cannot install on GPT.
If you can’t change the BIOS settings or want to use the Windows installer to handle the conversion, start the installation and press Shift + F10 to open a command prompt.

You should find command promt and put commands:

1. diskpart
2. list disk
3. select disk <disk number>
4. clean
5. convert gpt
6. exit

After restart you can install Windows on your HDD

https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-setup-installing-using-the-mbr-or-gpt-partition-style?view=windows-11

Option 2: Adjust your computer’s BIOS/UEFI settings
Restart your computer and enter the BIOS/UEFI settings (usually by pressing F2, F10, F12, or Del during startup).
Find the boot mode setting and change it. If your disk is GPT, ensure your computer is set to boot in UEFI mode. If the disk is MBR, select Legacy or BIOS mode.
Save the changes and exit the BIOS/UEFI setup.
Try the Windows installation again.