Take the white remote control that is on the table under the projector or on the white cabinet near the projector, point it at the projector and press the green power button. A power-on sound should come from the projector, if you hear it, all is well.
Also press the source button on the remote and make sure HDMI 1 is there, otherwise change the source to it.
Switch on the receiver by pressing the "on/standby" button.
First, press the PC button on the receiver, which has a button signed with white paper. Second, connect the HDMI cable next to the table under the projector to the laptop.
Turn on your PS4 console using the controller that's on the white box and press the PS4 button on the receiver, which has a button signed with white paper.
It is not configured yet, so this feature is not available, we will fix it soon.