Acer Aspire One D260 Function Key Combinations (Netbook)

F2 Key during POST to access BIOS.
Fn + F1Displays help on hot keys.
Fn + F2Displays the System Properties.
Fn + F3Displays the Power Options Properties.
Fn + F4Puts the notebook into sleep mode.
Fn + F5Switch between notebook screen and external display.
Fn + F6Turns display screen backlight off to save power. Press any key to return.
Fn + F7Switch Touchpad on/off.
Fn + F8Switch built-in speaker on/off.
Fn + F11 Switch Num Lock on/off.
Fn + F12 Switch Scroll Lock on/off.
Fn + Up ArrowIncrease speaker volume.
Fn + Down ArrowDecrease speaker volume.
Fn + Right ArrowIncrease display brightness.
Fn + Left ArrowDecrease display brightness.

Toshiba NB500/NB505/NB520/NB525/NB550D/NB555D Function Key Combinations (Netbook)

F2 Key when the Toshiba Leading Innovation >>> screen appears to enter the BIOS.
Fn + EscSwitch built-in speaker on/off.
Fn + F1Puts the netbook into "Lock Computer mode".
Fn + F2Switch between power usage modes.
Fn + F3Puts the netbook into Sleep Mode.
Fn + F4Puts the netbook into Hibernation Mode.
Fn + F5Switch between laptop screen and external display.
Fn + F6Decrease display brightness.
Fn + F7Increase display brightness.
Fn + F8Switch wireless on/off.
Fn + F9 Switch touchpad on/off.
Fn + F10 Switch cursor control overlay on/off.
Fn + F11 Switch numeric overlay on/off.
Fn + Space Changes the display resolution.
Fn + 1 Reduce the icon size on the desktop or the application window.
Fn + 2 Enlarge the icon size on the desktop or the application window.
Fn + 3Decrease built-in speaker volume.
Fn + 4
Increase built-in speaker volume.

Asus G73JW Function Key Combinations (Notebook)

F2 Key on boot up to enter BIOS.
Fn + F1Puts the notebook into suspend mode (Save-to-RAM or Save-to-Disk depending on sleep button setting in power management setup).
Fn + F2Switch Wireless devices or Bluetooth(on selected models) on/off.
Fn + F3Decrease the keyboard light brightness.
Fn + F4Increase the keyboard light brightness.
Fn + F5Decrease display brightness.
Fn + F6Increase display brightness.
Fn + F7Switch the display backlight on/off.
Fn + F8Switch between laptop screen and external display.  Note must connect an external monitor before booting up.
Fn + F9Switch touchpad on/off.
Fn + F10Switch built-in speaker on/off.
Fn + F11Decrease built-in speaker volume.
Fn + F12Increase built-in speaker volume.
Fn + CSwitch the "Splendid Video Intellient Technology" function on/off.  This allows switching between different display colour enchancement modes to improve contrast, brightness, skin tone and colour for red, green and blue.
Fn + VToggles "Life Frame" camera utility.
Fn + Up ArrowCD Stop.
Fn + Down ArrowCD Play/Pause.
Fn + Right ArrowCD Fast Forward to next track.
Fn + Left ArrowCD Rewind to previous track.

There are 3 buttons above the keyboard on the top left.


Light Cancellation key
Switch the keyboard LED and the instant keys light on/off.
Turbo/Express Gate key If the notebook is on then this button will switch the turbo mode on/off. 

If the notebook is off then it will launch Express Gate. Express Gate lets you boot into a basic Operating System in 5 seconds.  This OS has a web browser, image viewer, Skype, some games and instant messaging.
3D Mode Switch key(on 3D models) or 
Splendid key (on non-3D models)
Switch 3D mode function on/off.  The 3D function is only available when playing a 3D game or watching a 3D movie.

Switch the "Splendid Video Intellient Technology" function on/off.  This allows switching between different display colour enchancement modes to improve contrast, brightness, skin tone and colour for red, green and blue.

Download Asus G73JW Manual

Lenovo Thinkpad L420, L421 and L520 Function Key combinations (Notebook)

F1key when ThinkPad logo comes up, to enter the BIOS
Fn + F1Reserved.
Fn + F2Lock the notebook.
Fn + F3Select a power plan (in Windows XP, power scheme) that has been created by Power Manager, or adjust the power level by using the slider control. When you press this combination, a panel for selecting a power plan (power scheme) appears.
Fn + F4Put the notebook into sleep (standby) mode.  To return to normal operation, press the Fn key only, without pressing a function key.  To cause the computer to return from sleep (standby) mode and resume operation, do one of the following:

- Press the Fn key.
- Open the LCD cover.
- Turn on the power switch.
Fn + F5Switch Wireless devices on/off.
Fn + F6Change the webcam settings and the setting of the microphone mute button.
Fn + F8Change the settings of the UltraNav® pointing device.
Fn + F9Reserved.
Fn + F10Reserved.
Fn + F11Reserved.
Fn+PgUp Switch ThinkLight(on selected models) on/off.  The ThinkLight is a little LED light integrated into the notebook. It helps users work in low light conditions.
Fn + Home Increase display brightness.
Fn + End Decrease display brightness.
Fn + SpaceEnable the FullScreen Magnifier function.
Fn + ScrLkSwitch Num Lock on/off.
Fn + PauseHas the same function as the Break key.
Fn + Down ArrowPlay or Pause
Fn + Up ArrowStop
Fn + Right Arrow Next Track
Fn + Left ArrowPrevious Track

HP ProBook 4520s Function Key Combinations (Notebook)

F10 Key on boot up to enter BIOS.
Fn + Esc Display system information.
Fn + F1Puts the notebook into Sleep mode.  To exit Sleep mode, briefly press the power button.
Fn + F2Decrease screen brightness.
Fn + F3Increase screen brightness.
Fn + F4Switch between laptop screen and external display.
Fn + F5Launch the default e-mail application
Fn + F6Launch the default Web browser.
Fn + F7Switch built-in speaker on/off.
Fn + F8Decrease built-in speaker volume.
Fn + F9Increase built-in speaker volume.
Fn + F10Playing the previous track or section of an audio CD or a DVD.
Fn + F11Playing, pausing, or resuming an audio CD or a DVD.
Fn + F12Playing the next track or section of an audio CD or a DVD.
Wireless KeySwitches wireless devices on/off and is to the right of the F12 key.

Download HP ProBook 4520s Manual