building pc and not starting

[1337dingo]

hey guys its been a while since i have built a computer from scratch now i got the parts:
case: https://www.pccasegear.com/index.php?main_page=product_info&products_id=12925
MB:https://www.pccasegear.com/index.php?main_page=product_info&products_id=17839
RAM:https://www.pccasegear.com/index.php?main_page=product_info&products_id=16848
graphics:http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_1179&products_id=16622
CPU:https://www.pccasegear.com/index.php?main_page=product_info&products_id=18600
power supply:https://www.pccasegear.com/index.php?main_page=product_info&products_id=15097
hard drive:http://www.pccasegear.com/index.php?main_page=product_info&cPath=210_344&products_id=16679

now put it all together and all, looks fine, turn it on it turns of for a second and turns off so maybe i have a connection wrong some ware? but i cant see i have been over it heaps, are they all compatable? the only other thing i can think of is my boss (also techy) said the mother board if its touching the case it might be causing it but i cant see that it is? any suggestions

 

[1337dingo]

hmm found it, the case had a cable with "+5v", "D-", "D+" and "ground" took this out and it worked, any idea why it wouldnt with this in?