What is the reason why the camera of the Win7 system computer cannot be used

Some users in the reaction to use Win7 Ultimate system will appear suddenly unable to use the camera, the display is open failure, such a situation, many customers do not know how to solve, I thought that my camera is broken. In fact, sometimes it is not like this, we can use some exclusion methods to see what kind of reason, we can take a look at the solution!
First, let's take a look at what the camera may fail to open. The cause is that first check whether the power of your camera is plugged in to see if it is not connected and can not be used. If you see if the driver is successfully installed, it is not tampering and cannot be used.

Second, we see that at the time of check if win7 camera is good, then we need to look at the drive may be damaged in need of repair to normal use.

1, we see the right-click on the computer and then manage open, then see the image device management window options open, select the camera this option, then choose Update Driver to fix.
2, then we open win7 new window to see the choice of driver software to find this option, then select "select from the list of computer device drivers" click to open, and then select the driver update function in the USB video device After the update is completed, the restart can be used after the camera is successfully repaired.