bulding my first pc using an abit kg7 raid mobo, after putting in the retail xp1700 and hsf, ati 7500 aiw video card and the crucial pc2100 ddr ram, i tried testing it. for a split second the led light on the switch went on and also the fan and that's it. i took it out of the case and tried again, the same thing happened. Is it a mobo problem? oh by the way I am using a 300 watt ps, is this enough?