Why do not detected my web *** - Logitech Computers & Internet

Hello!
There are several causes to camera not detected error. Are you sure your camera is installed at all?
Let's see because we have to uninstall it anyway: Start>Control Panel>Uninstall a Program
See if your camera is in the list

• If yes: click on your camera name in the list and then click Uninstall/Change. When done, restart your computer.
  Please, make sure your camera model is supported by your Operating System:
  1. See which is your Operating System: Start>double click Computer>Properties and the first in the list is "Windows Edition" under which you can see which is your your Operating System.
  (Also run Windows Update/System Update which u can find by typing one of those into Start search box+Enter. If any updates available, install them and restart computer.)
  2. See your camera System Requirements: go to your camera's manufacturer's website, Click Products, choose your product and model, and they see your camera System Requirements. Which Operating Programs your camera works with? Do you use one of those?
  
  • If yes, then your camera can work with your Operating system and you do not have to change it.
  • If not, then your camera cannot work with your Operating System. Sometimes it works if we run update camera driver (only after installing the camera): Start>right click Computer>Manage>Device Manager and find your camera in the list, right click on it, click Update. When update done, and if updated, restart your computer. Go to Installing a Webcam.
    
• If you do not find your camera in Control Panel>Uninstall a Program, then your camera is not installed on your computer. Go to Installing a Webcam.
  

• Installing a Webcam: Insert camera driver CD, plug your camera if prompted, run Driver icon from the CD, Continue/Allow, and finish installing. Unplug your camera and restart your computer. I would also recommend checking for camera driver update (see above). When update finished, and installed updates, then restart your computer.

1st You download Webcam Driver.
my webcam Drivers After this install the Webcam driver in the system.
Installation of Webcam Driver
Go to the control panel
Click on the System Icon
Click on the Hardware Tab
Click on the Device Manager s
Select the Unknown Device or printer device where yellow Question Marks sign on it.
Right click on it and uninstall it.
After this go to the top of the device manager and click on scan for hardware changes.
Driver installation Wizard start.
Brows Your Driver from the Hard Disk and click on next.
Driver will be install.
Logitech Camera Drivers for Windows XP Vista Windows 7