Connecting to projector
First make sure the connections for an external display are properly connected. (HDMI, VGA or DP are display connections.)
Step 1 (Windows 10)
Press the windows key on the keyboard. While holding down the windows key press the "P" on the keyboard.
Step 2
Select the "Duplicate" option to duplicate your desktop on the projector screen or screens if more than one.
IF STILL UNABLE TO CONNECT PLEASE CHECK TO MAKE SURE ALL CABLES ARE PLUGGED IN PROPERLY