OS: Windows 10
Motherboard: ASUS ROG Maximus IX Hero Z270 LGA1151 (w/Kaby Lake Quad-Core 4.2 GHz)
GPU: EVGA GeForce GTX 1080 Founders Edition, 8GB GDDR5X
Monitor 1: (HDMI)
Monitor 2: (VGA, using VGA > DVI adapter)
System worked after it was built. The problem came the next day when it was brought out of sleep mode and the second monitor was “no signal.” GPU driver is up-to-date and the VGA>DVI adapter is not faulty. A different monitor was tested in place with the same problem.
Since then this is remedied by :
1. shutting the computer down completely
2. unplugging monitor 2 from the case then power back on
3. after boot up, plug monitor 2 back in: Windows recognizes it
Another interesting thing is that there seems to be an issue with time. Putting it in sleep mode and then bringing it out shortly after doesn’t cause the monitor to lose signal. This happens when its been in sleep overnight.