Monitor No Signal on Launch

Problem: Launching WoW causes monitor to show "No Signal" message.
Problem occurs after PC is left AFK and goes into sleep mode, then waking it up and trying to launch WoW. This happens with 100% consistency, and only happens in said scenario, which proves to be a big problem, since I leave my PC on often to do chores, and having this happen all the time is obnoxious.
Will edit with specs later, have no access to my PC atm. Thanks for your attention!

NVIDIA GeForce GTX 1060 GB
AMD Ryzen 5 1600X Six-Core 3.6 GHz
8GB RAM (prolly the problem)

when you have a technical problem, you have to said more than "i have a problem". You have to give all specification of your pc, system, may be log.
If you don't understand /don't have any knowlegde or are too lazy, easiest solution : turn off the sleep mode.

p.s:I bet you are on window, classic error of this system. **** tiers os, when it come time to manage ressource of ram.