Fixed in SW 1.1.1.
Normally, while the system is performing power-on self test (POST), pressing the F12 key brings up a Select Boot Device screen.
Occasionally after a firmware update or after you have configured the system using the BIOS Setup Utility, this screen might not appear when you press the F12 key.
Workaround
To access the Select Boot Device screen:
Wait for the POST to finish.
The system restarts and begins a new POST.
Press F12 during the new POST.
The Select Boot Device screen should appear.