My husband and I found an Emachines computer on the side of the road today. It was by our house and must have just been put out because it wasn't out there earlier in the day. So, I am pretty sure there is no water damage to it. For some reason, when we plug it in and press the power button, it does nothing at all. No lights, no beeps, nothing. However as soon as it is plugged in I hear a very faint high pitched whirring noise coming from the power supply. I am just wondering if the problem is the power supply, the cpu, or the motherboard. If it is either one, I am wondering what we should replace them with. We would be using the computer for gaming, but we are on a budget, so we wold need highest quality for cheapest price. Can someone please help me???