Doesn't always provide source to the proj, on PC boot up. Display settings show all displays and at right res, but on projector side Source is not detected. First PC boot up only 1x projector gets source detected. Restart of PC 3x projectors get source. It's random all the time and always different never all 4. Driver V16.2 on WIN 8.1 WHERE DO I START TO NARROW MY PROBLEM?