Hi all,
God this is doing my head in

I have an SUPER FLOWER SF-464T2 I have bought all new stuff for my new computer so I am using all my old stuff in this SF-464T2 I have connected all the supplies and all the correct cables I am not getting any power to the computer now I have transfered all the old stuff back to my old case and it works fine so I know there is no problem with the power and the hardware..
can anyone point me in the right direction I have had the front pannel off there was a wire for the lights that was loose but they have connected to a power supply and they seam to be working fine
PLEASE PLEASE help