The notebook computer cannot connect to the projector. It may be a problem with the VGA cable. Check whether the interface between the VGA cable and the computer and projector is tightened.
The following is the correct way to connect a laptop to a projector:
1. Turn on the computer and projector, and use a dedicated VGA video cable (the blue pinhole) to connect the computer and projector. If the projector can be started successfully, the projector will be directly connected to the computer. If the connection is unsuccessful, re-plug the plug to determine whether there is a bad contact
2. Make sure that the projector and computer are connected properly, then open the notebook interface, right-click anywhere on the desktop, find the screen resolution and click in
3. Click Screen Resolution After the rate is met, we can select "Connect to Projector" and click in
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