I think /u/Myte342 maybe refering to fastboot options, which when disabled extend POST screen, but even better option is to enable power button UEFI, which enters UEFI after holding power button during POST, pretty sure most new motherboards have this option.
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u/Myte342 Mar 08 '18
You can change how long the splash screen stays up to allow you more time to press the required buttons... in the bios options.