I'm almost done with my first computer build. I have everything in except the RAM. I tried starting the PC just to get to the BIOS but it won't turn on. I have a power signal on my motherboard and that's about it. I've tried putting the jumper cables from the case onto the motherboard in different pins. It won't turn on even when i press the power on button on the motherboard itself. I have 4 gigs of DDR2 800 RAM in currently, but the motherboard recommends DDR2 1066. I didn't think there was a minimum requirement for RAM on a motherboard. So my question is, since it's not using the recommended RAM speed, is this what is causing the PC not to power on?