Yesterday i got a new monitor and was happy to use it. I plugged it in with the cable that connects to my power outlet, and also a display port cable. It all worked fine and i was enjoying the higher rehresh rate (144hz). This morning. When i turned my computer on, it just said "AOC" followed by "no signal". The computer stays on but im not sure what happened to the monitor. The old one i was using worked fine. Help would be much appreciated. :/