I have assembled a new Pc, with P4 3Ghz LGA775 Cpu and Asus P5P800 board. The problem is that when I hit the power switch nothing happens. All I hear is a "tick" sound. The power supply is 300W. However I have just found that, I have misplaced the DDR Ram's on the board. Could this be the problem? Or is it an issue with power. Can I use 300W with this conf.?