Re: new build not working :(
You should post this is hardware troubleshooting. (you are not buying anything or asking about buying suggestions.)
Could be that powersupply is bad, but I dont think so. Try connecting the HD again. and make sure you connected them to the right sata thingy.
ANTEC 900: Gigabyte Ga-Ep35-DS3P : THERMALTAKE (700 watts) :
4 GB G.SKILL 1000 mhz Intel Quad Core (Q6600)
ATI 4870 ARTIC COOLER FAN
WD 640 and 22x DVD burner