My monitor is the aoc i2367fh, everything was fine until this week when it started going into a black screen and saying No Signal, so I press Enter on my keyboard and the monitor turns on again.It happens when watching streams on Twitch, watching videos on Youtube, and playing games. The CPU temps are between 50 to 60 Celsius. I do not own a GPU at the moment, I am using the Integrated Graphics on my Intel i5-4690k. I need help.