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How to Mirror a Computer Display?

I currently have one HP Laptop and one LCD monitor. I connect the monitor from the Laptop (1st display) via VGA cable (2nd display).
I would like to display on the two screens to be identical. I tried to change the Control Panel display settings but unsuccessful.
Is there any small applications able to switch the display mode easily?
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Top Expert 2012

Commented:
You want clone mode, which means you right click on the desktop and choose properties, click on the Settings tab, click on the second monitor, and make sure the "Extend my Windows desktop" checkbox is NOT selected.
Raymond PengSystems Engineer

Commented:
Just to add on Callandor's instructions - this option may appear as Dualview on some 3rd party video card settings.
IT Manager
Commented:
Many laptops have a Fn key assigned to toggle second screen outputs, specifically for use on projectors or slave screens.  Fn + F4 is used on most HP laptops.

Author

Commented:
The final solution is select the Dual display option in the HP Q Menu.
http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c01136921&dlc=en

Author

Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for bbkevin's comment #37863732

for the following reason:

It's really only option in my HP Laptop.
Danny ChildIT Manager

Commented:
I've yet to see a laptop with an external video port that DOESN'T have a hotkey to clone the display externally, so I have a very high confidence level in my answer.
Danny ChildIT Manager

Commented:
The image on BBkevin's link above:
http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c01136921&dlc=en 
shows the Fn + F4 key option clearly labelled.

Author

Commented:
I tried the Fn + F4 key but does not work.
Danny ChildIT Manager

Commented:
If there's a problem with that key combo, it normally means that some of the HP drivers are missing:

Fix here?:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00294488&lc=en&cc=us&dlc=&product=3255934&rule=45469
 - take note of the additional tips at the end of that doc!

but thanks for the points anyway!