Acer
ESC, F12 or F9 Boot Menu
F2 or DEL Enter BIOS
Asrock
F11 Boot Menu
DEL Enter BIOS
Asus
ESC Boot Menu (Older ones may be F8)
F2 Enter BIOS
Gigabyte
F12 Boot Menu
DEL Enter BIOS
HP
ESC Startup Menu
F9 Boot Menu
F10 BIOS
Intel
F10 Boot Menu
F2 Enter BIOS
Work in progress, if you have any to add please post here or email me 🙂