How to solve the black screen of Win7 system USB video device?

1. Right click on the “Computer” icon and select “Manage” "Manage";

2. In the open computer management interface, click on <;Device Manager—— Image Device ”, then select the camera under the image device, right click and select "Update Driver".

3, a window to update the driver software will pop up, select “ browse the computer to find the driver software & rdquo;;

4, select “ device driver from the computer Select ” from the list.

5, pop-up selection for this hardware installed device driver, select the model type "USB video device" drive update.

6. After the update is successful, it will be displayed as a USB video device. If it is not successful for the first time, it can be updated again, and then restart the computer and it will be OK.