As you can see from your examples (which look like you found them in manuals or on the internet) there is no exact way.I am really sorry for that
Actually i closed this one for lack of examples
How to open camera(built in) in a HP laptop?
How to turn on built in webcam on a Hp laptop?
How do i start my webcam on my msi laptop?
How to Enable Webcam on Laptops: Windows XP"
Here i want to know the exact words use to start a webcam conversation?
which one is correct?