My monitor won't stay on. I have to shut the monitor on and off approximately 15 times in order for it to stay on. The power light on the monitor stays on yellow. But after turning it off and on several times it turns green and works normally. This only happens once it has been turned off or has been idling for a while. Also I can tell when it is going to stay on because the screen is brighter. Can you tell me how to fix this or is it fixable? It's been doing this for a year. I thought it was my old computer but is still doing it even when I purchased another tower.