How can I activate my HP TrueVision webcam (HP Envy dv7; Windows 8)

Question

I'm really losing my patience here. My laptop is brand new. I remember the first time I started it I clicked on CyberLink YouCam and the camera worked. I even took a picture with it.
Since then I am trying to activate the webcam and it is not working. I wanted to Videochat on Skype but the webcam was not activated so there was no webcam option.
I read that if you go on Facebook and click on "Change Profile Picture" and then "Take Picture" it activates the webcam, but not in my case.
When I start CyberLink YouCam it says that there was no webcam found and if I have to activate it if I have one.
So here is my question: How do I activate the webcam? Please, just give me the instructions on how that works. What button combination I have to press or whatever.
I have the HP Envy dv7-7202eg with Windows 8. Bought and used in Austria, if that information makes a difference :-)
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Answer 1

If the webcam worked before, it may be "stuck".  If that is the case, then a Reset may kick it all free and you will be "back in business" in a couple of minutes.  If the Reset does not fix it, there are a few more options.  Stop when it works.
At the bottom is a Help Guide that goes over the testing and options that you have available from the software side to help you solve the problem.
This is a brand new system; if all else fails, please do call HP and ask for help!  Just because the webcam worked before does not mean it works now.  These little webcams are delicate and they can break - the wires are tiny and they can be crushed, bent, or broken at any time.  If the stubborn webcam won't work, Call HP and ask for help.  Something may have been missed or the little beast may be broken!
Contact HP
Try this simple Reset:
Notebooks- Forced Reset to Resolve Hardware and Software Issues- Sealed Non-Removable Battery
OR
Notebooks - Use Hard Reset to Resolve Hardware and Software Issues - Removable Battery
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Is your Driver Installed?
sp59986 Cyberlink YouCam
NOTE the name and the location - the *.exe file will likely save to "Downloads “
Install the Software / Driver installation package:  If you have ‘Admin’ control, you may highlight the package(s) and “double-click” to install, else Right-Click, Select ‘run as Administrator’ and install.
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If the Reset and the Driver Installation do not bring Joy:
Close all your applications and Shut down the notebook
Press the Power key and as the notebook is starting, Tap away on the ESC key to get into the Start Menu
Select F10 to enter the BIOS Menu
Press F5 to load the Defauls (might be F9 - see the bottom of the page for the correct key)
Using the ARROW keys to navigate, Select YES and hit ENTER
Let the system completely load (boot up), and log in
Start Screen > Desktop > Windows key + X > Device Manager
Check the Device Manager for the HP TrueVision Webcam device
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BIOS Update
You can check to make sure your BIOS is updated to the latest version.  If needed, and you decide to do so, you can opt to update the BIOS.
HP ENVY dv7-7202eg Notebook PC Drivers & Downloads
When updating the BIOS:
Disconnect all USB drives
Always run in AC power
Do not touch the system while the update is in progress
Optional: leave wireless button ON, but turn off the router (to make sure there are no interruptions)
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The "All Things Webcam" for Windows 8:
HP Notebook, TouchSmart, and AiO PCs - Webcam Troubleshooting (Windows 8)
Good Luck!
Kind Regards,
Dragon-Fur