When i boot in to windows the screen says window xp in very dim is this from not enough power? + at time my computer slows down alot. It was just built and new window xp home ed put in. 2700 tb , msi delta motherboard , msi 5700le card , 300 watt power + 4 fans and few other thing. i really think it's the power but i want to make sure thx.