ActionKey
Boot menu:F12
Bios setup:F2
Bios flash:
Network boot:
OS recovery :
Other:

To enable Boot menu (F12), go to BIOS (F2) and select: Main → F12 Boot Menu → Enabled
You can't select boot order in boot menu, only in BIOS.
Can boot from USB with Ubuntu ISO (checked: xubuntu-16.04.1-desktop-i386.iso, add "forcepae" to kernel parameters)