I've used this monitor for about a month, the same time I started using my new pc. After I came home today after leaving my pc turned on in a game my monitor started to turn on and off (off for about 5-10 sec and on for 1-2). I tried it on other computers aswell but it does the same thing there. I've switched power cables and its still the same! I've even tried different hdmi cables. What could be the problem then?