check that you have the 4 pin power connector buy the vga port plugged in it above the cpu on the products page of your mb.
also check that the ddr2 ram your trying to use is on there qual list. also check that you plugged in all the power connectors to your video card. some video cards need more power then the pci bus can give them. the last thing is take the mb out of the case to see if it was shorted..if it wont post after you reset ram and video card..check the cpu that there no bent pins.
double check the power connectors
make sure the front panel connectors are plugged into the motherboard (power button, reset button, hard drive activity led) look into your motherboards manual for a diagram on how to connect these
make sure your power supply switch is set to on (I) and not off (O)
umm make sure the slider for the power supply is in the right position. (220v or 110v)
Ok so i sent the mobo to the support center and they told me it worked fine with them!!
I get it back, I put it back in and still no booting!!! I've tried another cpu and i god the same! so it's not the cpu-mobo combination! In one of my tries I god 3 beeps witch means that there was a problem with the ram, but after i restarted it got away!