One easy way to meet Microsoft's boot time requirements is to skip input device enumeration, so there's a lot of machines meeting the Windows sticker requirements where entering the firmware either requires a bunch of failed boots or getting far enough into the boot process that you can be offered an opportunity to reboot into the setup menu.
I have a system where you need to hold down power when turning on the PC to get out of "Quick Boot" mode, and get the ability to get to the bios screen. It's a Sandy-Bridge-era Intel motherboard.
If you want to have (legit) "Designed for Windows" and similar certification, you need to have an option to disable "fast boot" as well as option to enable it.
The fast boot involves skipping a bunch of slower pathways using saved knowledge of minimal set of devices to bring up to boot the OS in happy path, and only reset to "slow path" if it fails.
In fast boot, you're often unable to hit the button to enter the menu and at most get to it through windows "reboot to firmware" option.
