Review on Enhanced Philips 279P1 Power Saving PowerSensor Computer Monitor: 3840X2160P, Accurate Colors, 10-Bit Panel - Ultimate HD Experience! by Brian Avila

I turn on my laptop and my old external monitor turns on immediately but this one does nothing. I try to add, I unplug and reconnect, I press the power button, I press it again, I hold it - none of these actions have any effect. press and hold for 10 full seconds! It's not a great button that's comfortable to hold and easy to spot when pressed. All you have to do is change your body position so you can easily apply constant pressure to the button indefinitely. Or just work with the monitor off - the choice is yours.