Yes.
To do this you will need a video cable also called a VGA cable and your laptop. Firstly, turn off your laptop and projector. Connect your VGA to your laptop’s external video output, plug in your projector to the power source and turn it on along with your laptop.
For audio, connect the laptop’s audio to another audio system. After which sync the projector and laptop by holding down the function key(Fn) and pressing either F4, F5, F7, or F8 to toggle.