Where is my function key to Select Output to my TV

Is this a laptop or desktop? More than likely it's an output port. Output to what? A tv?

Normally you would just connect the cable between the computer and the tv. Then take the tv's remote and press Select Input. Then select HDMI as the input source. Reboot the laptop or computer and it should show on the TV.

If it's a laptop The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

I assume you are going from the laptop to the TV using a s-video connection. Take the tv remote and click Select Input. Change the input source to S-Video. Reboot the laptop.

Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

Also known as FN key lower part of keypad..

On laptops both the laptop LCD screen and the external video port can be toggled to show laptop LCD, external vodeo and bothe laptop LCD and external video.
You need to press and hold down the Fn key and one of the function keys that has the monitor symbol, repeated pressing this function key will toggle the video outputs.
I cannot advise you which function key works with your laptop as they vary between different laptop manufacturers.

Most laptops have three modes for video:
* output only to internal LCD screen
* output only to external VGA port
* output to both internal and external

Hold down the 'fn' ("function") key on the keyboard, and press one of the twelve 'F' ("function") keys, to "toggle" the video through the above 3 modes of operation, until you get output through the VGA port to the TV.

Also, on the TV, use the "input" or "source" button on the TV's remote control to select the 'VGA' input-port as the signal to be displayed on the TV screen.

On most laptops there is a key combination you have to press in order to tell the computer to output to the TV. After the TV is plugged in to the VGA port, you should press the function key (Fn) and another key. I am not positive the key on Acers, but it should have an icon that looks like a laptop followed by a / and a TV.

The video output on many portable computers toggles off and on with one of the function keys. Look for a function key with the image of a monitor on it, then hold down the Alt key and push the function key once or twice. It usually has several choices that you rotate through - computer monitor only, video out only (your screen goes blank) and both screen and video out.

1. User's Choice Function Setting Procedure
<Procedure>
1. Press the Utility key.
2. Touch the “User’s Choice” key.
3. Select the appropriate screen from the menu.
4. Select the appropriate function.
5. After the settings are complete, touch the “Enter” key to validate the settings.

2. User's Choice Function Tree
Memory Recall
User’s Choice 1/6 Mixed Original Detection
Language Selected **************** SEE THIS ONE
Original Copy Default
Auto Paper/Auto Size
User’s Choice 2/6 Drawer Priority
Special Paper
Multiple-in-1 and Booklet Copy
Zoom
Auto Panel Reset
Energy Save Mode
User’s Choice Mode User’s Choice 3/6 Plug-In Counter,ID Key Reset
Auto Power Off
LCD Back-light Off
4in1 Copy Order
Density Priority
User’s Choice 4/6 Default Copy Output Levels
Priority Density
Output Priority
Intelligent Sorting
Output Tray
User’s Choice 5/6 “Small” Originals
Scanner Dry
User’s Choice 6/6 Density (ADF only)

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

kindly u have to switch this vga output on there is toggle button

press Fn along with it press F5 button clearly marked with two monitors black and white this will enable the second output

and one more trick on the right side in the taskbar in the intel graphics accelerator icon right click and select dual display mode there as well if u have ati it is the same case see there in the task bar

pls rate me FIXYA if i fixed ur problem

Sound and picture are two seperate things unless you use an HDMI cable so lets just deal with the picture first
After you do the connection, you need to tell your laptop to present the picture to the TV.
1- On your keyboard, one of your function keys (F1, F2 etc.) will have a short cut for this as a secondary functionality. Check for the function key that has an icon on it that looks like a screen (usually it is f4 or f7). Then hit the key that activates  your secondary functions and the key you just identified. This should activate the VGA output and in most cases will also give you a configruation screen (where you can select it as a secondary display, dual display etc.)
If this short cut doesnt work, you can try this
2- Make sure VGA cable is connected on both ends. Right click your desktop on the computer and select "Properties". On the new dialog, select the last tab "Settings". Click the drop down box under "Display" and you should see the TV as the secon option, select it. Then select the check box that says "Extend my display...", click Apply and OK. This should expand your screen to the TV, you should now be able to drag windows from your laptop's screen to your TV's.
Good luck! (Instructions on option 2 are for XP, if you use Vista let me know and I will look up the terminology for that)