Fn f5 toggle not working

Are you enabling the external display feature? The HDMI must be enabled from the laptop keyboard before it will output. This is done with the "Fn" Key (lower left next to Windows key + the F5 key. This is a 3-way toggle. The default is normal screen. First toggle switches to external (HDMI), second toggle to both screens, and the third back to normal.

This excerpt from your User's Guide:

<Fn> + <F5> Display toggle
Switches display output between the display screen,
external monitor (if connected) and both.

First you may want to go to the TV's menu and select the input to which you have plugged in the HDMI cable.

Second, on the laptop you will have to press a key combination to change the display from the built-in LCD screen to the external output.
It is Fn + F5 on most Toshibas, you will have to look for a function key with an icon symbolizing a internal/external screen like this:


It works like a 3-way toggle; when you hold the Fn key and press F5 repeatedly it circles through the following options:
- internal LCD only
- internal LCD + external monitor (both)
- external monitor only

If you want to see the picture on the LCD as well, you have to stop at the "both" option, but the resolution will be limited to the one of your laptop screen.
If you want to use the full resolution of the TV (like Full-HD) you need to stop at the "external" only and adjust your laptop display settings to optimum/maximum resolution for your TV.

Please come back and rate the solution if helped or post a comment for further assistance.
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Once you made all the proper connection, meaning the hdmi cable from your laptop to your tv, and tunning your laptop to the right hdmi port (like hdmi side, rear1 or 2 however many hdmi input your tv has). Then I believe on acer model, you need to press the FN button and the F5 button at the same time that switches your external video source, Leave the Fn button press and then slowly press the f5 button key until your screen is display on the monitor HDMI. Like said earlier, you need to make sure the tv is tuned to the correct HDMI port.

Hi, Could you please post the Model Number of the computer.Are you trying to connect using a VGA cable or a HDMI ?Fn+F5 key combinations are used to toggle the display between the laptop and the External Monitor.Try these steps
1.Remove all cables,Turn OFF computer and Monitor
2.Start the computer and wait till it boots to windows nrmally.
3.Start the Monitor,then plug the cables between laptop and Monitor.
4.Check with Fn+F5 to toggle display

TV:- probably has a PC input - which is a VGA connector looks like this http://upload.wikimedia.org/wikipedia/commons/9/92/SVGA_port.jpg and then you select PC input on the TV to display whats connected to that port Laptop: - Now on the laptop, you will need to select the VGA output to work - thee will be a picture of a screen on one of the F keys at the top of the keyboard, F4, F5 normally on laptops, My Toshiba its F5 ---- (assuming F5) use the FN key and the F5 key together it will then toggle between the following <laptop only><laptop and VGA output><VGA output only>
If you are not using a VGA cable and are connecting by HDMI cable - then there will be a F key to toggle the HDMI output - and you will need to select HDMI on the TV - NOTE: if this has a blue ray player and you are playing a blueray DVD, theres is copyright to protection to only allow one screen to be used, so you will need to toggle the laptop F key to just output from HDMI

You need an HDMI cable to connect to monitor/TV, to toggle the display button is Fn+F5

I believe NEC has Fn key combinations that not only toggle the video output selections, but there is another that will turn the display on and off. I know on HP, the video toggle combination is Fn + F4.

Hi,
First of all your TV should support both HDMI and VGA.
If it does lets start with HDMI as you will get audio through the HDMI cable.
Connect the HDMI cable to the TV and set the source on the TV to HDMI using your remote control, connect the other end to the laptop, hold down Fn and hit F5 to toggle between screens.
See if that helps and let me know how you get on.


Good luck

First off, is the tv set to use the hdmi input? if not, change tv to hdmi input and try again. If still no good, you likely need to tell the laptop to use the hdmi connector. Try this:

1. connect hdmi from laptop to tv and select hdmi input on tv.

1. while holding the blue fn key (bottom left side of kbd) press and release the F5 key. This will toggle the laptop between the laptop lcd display, external connectors (vga/hdmi), or both simultaneously. Let me know if this works or not.....

Hi there Dream,

There is a toggle function for switching the display. It cycles from normal to external to both.

You are looking for one of the F-Keys (Normally F5) should have a little rectangle between two vertical lines. It's supposed to be a monitor.

To cycle the display, press the Fn key (near the space bar), then the F-key. Your standard display should go blank. To get it back, do the same thing.

If your TV still displays nothing, Check which input its using.

This should get you going.
Mike