Looking for some help here. Over the last few days I've noticed that my screen dims (almost like it's about to turn off) for a split second at random times while using the computer. It's barely noticeable with the lights on, but it's real easy to see with the lights off. Each time this happens, there is a very faint click that comes from the case. Nothing else that is one the same circuit breaker seems to affected. I'm thinking the power supply may be going up?