I have IBM R40 Laptop

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

Trying using the "numlock" key it should undo the Fn hot keys. If your notebook is in hibernate state, using the power-up switch on the notebook will activate you notebook. This will ask you for a password, if you have been using one to logon to you notebook. The FN+F4 or F5 will toggle between a blank screen and a display.

The problem youve discribed does seem to point to your back light has failed on the laptops lcd display, i dont know exactly how this would accure just using a projector though, go into bios again and try loading factory settings.

This problem could also be the inverter if you cant make out even a slight image on the screen.

let me know what happens. thanks

Hi, could be simply your computer is going into sleep mode and not waking back up. try changing your screen saver option to not hibernate or sleep.

can you take out your battery and plug in the power? if it works, i suspected it's a battery faulty. if not please make sure to charge up your battery up to 100% then boot up your machine normally.

Hi,
go to control panel,power options,
change your power settings
stop Hibernation,
" choose what to do when I hit the power button" etc....

Hibernation causes problems with startups

Don't use hibernation, use standby,sleep
or turn it off completly
should cure the problem

Regards
Richard.

you still havnt given any extra info.
your pc has s-video your tv has s-video..
you link it up to view pc data on tv via fn +f4....(or whichever f key with square icon on it)
as soon as you link up nothing is seen on tv press fn key and f4 key together and you can see image on tv and pc press again image only on tv press again image only on pc again....
to watch continuous go to control panel click display,select screen saver and click powe and disable or reconfig sleep mode,hibernate.
eg..turn of monitor=never...turn off disks=never...system standby=never....change minute countdown in screensaver.
eg wait =5min change field to 2000min...
to view screen size on tv you use tv config 4.3,16.9,cinema,widescreen etc...

Remove the battery of your laptop, wait for about 10 minutes, reconnect the battery and try again

You may have a problem with standby versus hibernation mode. Go into control panel and look for your power options. You need to look for power options for standby etc. Ideally you should not allow your computer to hibernate. Some laptops just wont come out of hibernation mode successfully so preventing it is a good option. Secondly scan your laptop for viruses at the earliest opportunity

Hey there SeanJohn79, have you tried hooking an external monitor to your laptop. You can move the video output back and forth, from external, LCD + external, LCD using Fn + F7. Hopefully this will allow you to see the necessary info for diagnosing the problem. Good Luck. Keep us posted! In case you are not aware, these are some display related key functions:
Fn + F3 = turn off lcd
Fn + F8 =Switch computer screen size
Fn + F12 =Hibernation mode, power for 4 secs releases.
Fn + F4 = Standby mode, press Fn key to return to normal
If you haven't tried switching some of these, give it a shot.