I haven't connected the 4 pin power supply next to the 24pin yet so I am going to try that next - with booting up the light comes on next to the memory sticks, fan on the artic 64 pro spins aswell as the fan on the dfi board, also an led on a pci dvt card lights up but there is no display coming out of it at all. Im pretty sure its not the graphics card either as ive swapped the original pci-e one with a new pci-e one. The ram should be ok even tho im going to upgrade. The ram is working fine in the pc I am using at the moment. Just a shame really as I got a Opty 146 I cant yet use