My Second Monitor Won't Turn On After Sleep Mode.

[LarryThePickle]

I have been dealing with this problem for several months now, and nothing has worked so far. In the power plan I have my computer to never go to sleep, but it still does. When I wake it up, my primary monitor doesn't turn on, it's not even detected in the device manager. To fix this, I just restart my computer and it turns back on.

 

[JackNaylorPE]

Open up the Power Plan control ... change plan settings / chnage advanced settings / advanced settings / scroll down to display / Turn off display after and put in a really big number

 

[geofelt]

I have a similar problem.
One of my monitors will not wake from sleep mode.
I fix it by turning on/off the monitor power button and then select detect in the desktop screen resolution window.
The monitor in question is a Yamakasi Sparta 301.
I have not tried an alternative monitor yet, but I suspect it is something to do with the monitor that the graphics card can not detect in sleep mode.