You state to hold the fn, and hit the power button.....OK, whats the ( fn ) key ?

F1 - Security System

1

Press and hold the "Fn" key on the lower left-hand corner of your Toshiba keyboard.

2

Press the "F1" key to activate the security system.

Your laptop's screen will go blank so others can't see what you are working on or accessing.

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3

Press any key or touch the touchpad to exit the security mode.

F2 - Power Save Mode

4

Press and hold the "Fn" key.

5

Press the "F2" key to activate the Power Save mode and make changes to how your laptop handles operating on battery or AC power.

6

Press "Fn" and the "F2" key again to exit the power save mode.

F3 - Standby Mode

7

Press and hold the "Fn" key.

8

Press the "F3" key to place your laptop in Standby mode.

The Standby dialog box will appear.

9

Verify you want to enter Standby mode. Press the power button on your Toshiba laptop to exit Standby mode.

F4 - Hibernation Mode

10

Press and hold the "Fn" key.

11

Press the "F4" key to activate the Hibernation mode and save whatever documents and files that are open to your hard drive.

12

Verify you want to enter Hibernation mode. Press the power button on your Toshiba laptop to exit Hibernation mode.

F5 - Active Display Device/F6 and F7 - Toshiba LCD Screen Brightness

13

Press and hold the "Fn" key.

14

Press the "F5" key to change your laptop's active display device from the laptop screen to an external monitor.

15

Click on the display configuration you want: displaying on both the laptop and external monitor; only on the laptop; only on the external monitor; or a specific screen resolution.

16

Press and hold "Fn" and "F5" to accept the new display settings. Press and hold "Fn" and "F5" again to return to your laptop's display only.

17

Press and hold the "Fn" key.

18

Press the "F6" key to decrease your laptop's screen brightness. Press the "F7" key to increase the brightness.

F8 - Wireless Connection/Bluetooth

19

Press and hold the "Fn" key.

20

Press the "F8" key to select the wireless Internet or Bluetooth connection you want to use.

21

Press and hold "Fn" and "F8" to make your selection. Release the keys to confirm your selection.

F9 - Touchpad Control

22

Press and hold the "Fn" key.

23

Press the "F9" key to enable your laptop's touchpad.

24

Press and hold "Fn" and "F9" again to disable the touchpad.

F10 and F11 - Numeric Keypad/F12 - Scroll Lock

25

Press and hold the "Fn" key.

26

Press the "F10" key to enable your Toshiba laptop's numeric keypad.

27

Press and hold "Fn" and "F11" to enable the cursor control keys on the numeric keypad.

28

Press and hold the "Fn" and "F10" or "F11" key to disable the numeric keypad or cursor control keys.

29

Press and hold the "Fn" key.

30

Press the "F12" key to lock your cursor on a specific line of text. Press and hold "Fn" and "F12" to turn scroll lock off.

hope this helps

The waste ink tank refers to may be a small well, surrounded by a
rubber ring, that sits under the cartridge when it is parked.
Place a cotton tip swab ("Q-Tip") over the hole to wick out the ink inside.

Make sure you Press and Hold the FN key then hit the key that increases or decreases the volume. If the FN key is not held down while you press the volume keys, they will do nothing. The brightness works the same way, you must Press and Hold the FN key then hit the key that controls the brightness.

There are actually buttons on your laptop that are made for changing brightness.
Hold the "fn" key, and press the "Up" button while holding the "fn" key.
Do the same thing to lower the brightness, except hit the down key.
"fn" + "Up" Raise Brightness "fn" + "Down" Lower Brightness
Thanks for using FixYa.

one quick simple test to see if the key works is hold the Fn key and press the power button on a clod boot from power off state. If the PSA diagnostics start the Fn button is functional, and we'll need to troubleshoot other issues.
If the PSA diagnostics do not start, then reseat the keyboard (It has a slot connector into the palmrest) and see if that resolves. If still no change, replace 1st the keyboard, and if that doesn't resolve the palmrest.
http://support.dell.com/support/edocs/systems/late6400/en/sm/html/keyboard.htm#wp1179980

Ok, your numLK (number lock) is activated. Hold the Fn key on the bottom left or right of the keyboard, then press the Insert/numLK key on the top right of the keyboard. You should see a graphic box indicating "number lock off." Hope this helps. RoyBK

Press Fn Key plus POWER key ans see if the diagnostics will start. If no go, then the system is likely in a No POST state.

You can check the warranty status here:

http://support.dell.com/support/topics/global.aspx/support/my_systems_info/details?c=us&cs=04&l=en&s=bsd&~ck=anavml

and no paperwork is needed to get warranty support, all you need is the express service code on the bottom and be a authorized user of the system.

When you hold the Function button on the lower left down (Blue Fn) and hit the F keys the action in blue will occur. Fn + F8 will switch video output for example.

hit and hold the fn button and adjust the brightness with the right arrow. krakkerjack

Hi you need to hold down the function key (FN) and press the number lock key (num lk). hope this helps