Built-in flash and an external flash simultaneously

The external flash mount (hot shoe) has a small sliver of metal which when the external flash gun is slid on pushes it down to tell the body to not use the pop-up flash and some times the sliver doesn't return fully up to contact the underside of the hotshoe

The quickest way to change the display output settings is to use the
display hot key (Fn + F5):
1 Press Fn and F5 simultaneously.
2 While holding down Fn, press F5 repeatedly until the setting
you want takes effect. Briefly pause each time you press the F5
key to allow time for the display to change.
This hot key cycles through the settings in the following order
(the last two options are available if an external monitor is
connected):
? Built-in display only
? Built-in display and external monitor (simultaneously)
? External monitor only
? Built-in display and TV (or other external video device)
? TV (or other external video device)
? External monitor and TV
? Built-in display and external monitor (extended mode)
? Built-in display and TV (extended mode)
? External monitor and TV (extended mode)
? Swap-Switch primary display between internal display
and external monitor when using extended desktop

replace bulb. if u r using external flash plz use ineternal flash also some time to keep it safe

After I have detached my external flash (Nissin Digital Speedlite Di622), my Canon EOS 60D does not recognize the fact that the external flash is already detached. Thus, this does not allow the built-in flash to pop out when needed.

I have tried turning the power off and on again. The problem persists.

Change the display settings on the laptop to 800x600 - right click on the desktop > properties > advanced tab You will need to select TV out to enable that function use the FN key and the F5 key together and each time you press it will toggle through an output, not necessarily in this order
❖ Built-in display panel only ❖ Built-in display panel and external monitor simultaneously ❖ External monitor only ❖ Built-in display panel and external video device simultaneously (This should be SVideo TV out) ❖ Other external video device only (This should be SVideo TV out)
Press the FN key and the F5 key 4 times
On the TV you will need to select the TV input for the S-Video connector - This may be by selecting an Input AV1, AV2, AV3 etc - without the make and model of the TV I cannot say which to select
Here are some instructions on how to use S-Video - it covers a number of laptops including Toshiba http://www.svideo.com/compaq1700.html
This is a link to the Toshiba support site for that laptop http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=1130627&rpn=PSM43U&modelFilter=M45-S169&selCategory=3&selFamily=1073768663

remove the battery and remove the power adaptor ... press and hold the power button in the ON position and count to 20.

attach the AC adaptor only and press the power button ...this should fix the issue ... then re connect the battery.

if this does not work then add a external monitor .. if it lights up then hit the
Fn + F5 keys

Display modes
Fn + This hot key cycles through the power-on
display mode options.
The display mode options are:
Built-in display panel only, Built-in display panel and
external monitor simultaneously, External monitor only.
Fn + This hot key cycles through the power-on display options.
The display modes are:
❖ Built-in display panel only
❖ Built-in display panel and external
monitor simultaneously
❖ External monitor only
❖ Built-in display panel and external
video device simultaneously
❖ External video device only

It could be the 'back light' is burned out.
Or
Press Fn and F5 simultaneously to make sure the display
priority is not set for the built-in screen.
Or
Press the 'brightness up' key a few times.

Display problems
Here are some typical display problems and their solutions:
The screen is blank.
Display Auto Off may have gone into effect. Press any key to
activate the screen.
You may have activated the instant password feature by pressing
Fn and F1 simultaneously. If you have registered a password, press
any key, type the password and press Enter. If no password is
registered, press any key. The screen reactivates and allows you to
continue working.
If you are using the built-in screen, make sure the display priority is
not set for an external monitor. To do this, press Fn and F5
simultaneously (once). If this does not correct the problem, press Fn
and F5 simultaneously again to return the display priority to its
previous setting.
HINT: Holding the Fn key and pressing the F5 key several times will
advance you through the display options.
If you are using an external monitor:
❖ Check that the monitor is turned on.
❖ Check that the monitor’s power cord/cable is firmly plugged in.
-- Try adjusting the contrast and brightness controls on the
external monitor

There is a switch on the hot shoe to detect the external flash. When you use an external flash, the switch will be pressed down, then the unit will bypass the internal flash and won’t let it fire. If the little switch gets stuck somehow, you won’t get your internal flash on.
Check this switch on the hot shoe (either on the left side or the right side), blow some compressed air then plug/unplug an external flash several times. Hopefully you can get it back

From user manual (page 68):
Your computer comes with a built-in display panel, but you can also
connect an external display device to an available video port, as
follows:
❖ An external monitor or projector via the RGB (monitor) port
❖ A TV, VCR, or DVD recorder via the S-video (TV-out) port
Before connecting an external monitor or video projector, configure
your computer for the type of device you are connecting. To do this,
refer to the documentation for your operating system and devices

So you have to use an RGB cable or a S-video cable : your cable should be plugged into 15 pin VGA port in your PC and plug it into a correspondent port in your TV.
Try also S- video and select correponding input in your TV set (Both connection type DO NOT carry sound: use your audio connector from PC to TV audio input.)
Configure your extended screen using your manual instruction:
Once you have connected an external display device, you can
choose to use the internal display only, the external device only, or
both simultaneously. The quickest way to change the display output
settings is to use the display hot key (Fn + F5):
1 Press Fn and F5 simultaneously.
2 While holding down Fn, press F5 repeatedly until the setting
you want takes effect. Briefly pause each time you press the F5
key to allow time for the display to change.
This hot key cycles through the settings in the following order:
❖ Built-in display only
❖ Built-in display and external monitor simultaneously
❖ External monitor only
❖ Built-in display and TV
❖ TV only

Any key! This may help if its a display setting problem:
Fn & F5 simultaneously, cycles the display output through the 5 modes. (hold the Fn key down, and press the F5 key, press it again, give it time to change before you press it each time)
the 5 modes are:
1.built in display only.
2.built in display AND external monitor.
3.External monitor only
4.built in display and TV
5. TV only
*note: Internal display resolution must match external display resolution, and that resolution must be
at least 800X600, or higher