Thanks.
Here is the process I followed:
- during initial booting, press F2 repeatedly
- using the Administer Secured Boot menu,
2a- disable the Secured Boot
2b- plug your USB Bootable drive
2c- Use the option for EFI Management (first option on the administer secured boot screen)
2d- Browse Arch bootable drive and select the x64 shell efi file, and then, in the folder in the folder the x64 boot efi file - use F10 to save the settings
The computer will keep booting and most likely will land on your login screen if the laptop is configured with an OS.
- Restart your computer
- During that second booting sequence, use F12 to call the BIOS Boot Menu
- Choose the entry (typically third) displaying your USB Drive within those listed EFI entries
Your bootable drive should boot.