Hot keys for BootMenu / BIOS Settings
You may get your Boot Menu How or your BIOS settings by using special keys.

Below is a list of PC brands with their corresponding hot-keys.

Manufacturer	Type	Models	Boot Menu	Boot Once	BIOS Key	Change Priority
ACER	 	 	Esc, F12, F9	 	Del, F2	 
ACER	netbook	AspireOne, Aspire Timeline	F12	 	F2	 
ACER	netbook	Aspire v3, v5, v7	F12	The "F12 Boot Menu" must be enabled in BIOS. It is disabled by default.	F2	 
APPLE	 	After 2006	Option	 	 	 
ASUS	desktop	 	F8	 	F9	 
ASUS	laptop	 	Esc	 	F9	 
ASUS	laptop	R503C	F8	 	DEL	 
ASUS	netbook	Eee PC 1025c	Esc	 	F2	Boot Tab, Boot Device Priority, 1st Boot Device, Removable Device, F10
COMPAQ	 	Presario	Esc, F9	 	F10	BIOS "Advanced Tab", Boot Order
DELL	desktop	Dimension, Inspiron, Latitude	F12	Select "USB Flash Drive"	F2	 
DELL	desktop	Inspiron One 2020, 2305, 2320, 2330 All-In-One	F12	Select "USB Flash Drive"	F2	 
DELL	laptop	Inspiron	F12	Select "USB Storage Device"	F2	Settings->General->Boot Sequence->"USB Storage Device", then up arrow, [Apply]--[Exit]
DELL	laptop	Precision	F12	Select "USB Storage Device" from boot menu	F12	 
EMACHINES	 	 	F12	 	Tab, Del	 
HP	generic	 	Esc, F9	 	Esc, F10, F1	 
HP	desktop	Media Center	Esc	 	F10	BIOS "Advanced" tab, Boot Order, Move "USB Device" before "Hard Drive"
HP	desktop	Pavilion 23 All In One	Esc	Select boot media from the menu	F10	BIOS "Advanced" tab, Boot Order, Move "USB Device" before "Hard Drive". For non-UEFI media, disable secure boot and enable legacy support
HP	desktop	Pavilion g6 and g7	Esc	 	F10	BIOS "Advanced" tab, Boot Order, Move "USB Device" before "Hard Drive"
HP	desktop	Pavilion HPE PC, h8-1287c	Esc	Then F9 for "Boot Menu"	Esc F10	Storage tab, Boot Order, Legacy Boot Sources
HP	desktop	Pavilion PC, p6 2317c	Esc	Then F9 for "Boot Menu"	Esc F10	Storage tab, Boot Order, Legacy Boot Sources
HP	desktop	Pavilion PC, p7 1297cb	Esc	Then F9 for "Boot Menu"	Esc F10	Storage tab, Boot Order, Legacy Boot Sources
HP	desktop	TouchSmart 520 PC	Esc	Then F9 for "Boot Menu"	Esc F10	Storage tab, Boot Order, Legacy Boot Sources
HP	laptop	2000	Esc	Select "Patriot Memory" on the Boot Option Menu	Esc	 
HP	notebook	Pavilion	Esc	 	F10	BIOS "Advanced" tab, Boot Order, Move "USB Device" before "Hard Drive"
HP	notebook	ENVY dv6 and dv7 PC	Esc	Then F9 for "Boot Menu"	Esc	F10 Storage tab, Boot Order, Legacy Boot Sources
INTEL	 	 	F10	 	 	 
LENOVO	desktop	 	F12, F8, F10	 	F1, F2	 
LENOVO	laptop	 	F12	 	F1, F2	 
LENOVO	laptop	IdeaPad P500	F12 or Fn + F11	 	F2	 
NEC	 	 	F5	 	F2	 
PACKARD BELL	 	 	F8	 	F1, Del	 
SAMSUNG	 	 	F12, Esc	 	 	 
SAMSUNG	netbook	NC10	Esc	 	F2	Boot Tab, Select "Boot Device Priority", Press Return, Up/Down to Highlight, F6/F5 to change priority
SAMSUNG	ultrabook	Series 5 Ultra and Series 7 Chronos	Esc	 	F2	Boot Tab, Select "Boot Device Priority", Press Return, Up/Down to Highlight, F6/F5 to change priority
SHARP	 	 	 	 	F2	 
SONY	 	VAIO, PCG, VGN	F11	 	F1, F2, F3	 
SONY	 	VGN Esc	F10	 	F2	BIOS "BOOT" section, "External Device Boot" enabled
TOSHIBA	 	Protege, Satellite, Tecra	F12	 	F1, Esc	 
TOSHIBA	 	Equium F12	F12	 	F12