My be quiet! Dark Power Pro P10 630W will not start with the paper clip installed and a couple of fans installed. Or with paper clip fans and a blade.

Any ideas? I am sure it is connected green to black on the 20+4 pin.
I connected it to an ancient MB and it worked. But not with the paperclip only.

EDIT: Ok for the moment I solved it by just putting 10 year old computer with everything disconnected from the MB and the 20+4 pin from the PSU into there.

I have 4 PCI-e connectior into the backboars which didn't work running 6 blades but it did work with 5. I did put to of the supplied molex 4-pin adapters into 2 of the blades and on there own harddrive 4-pin from the PSU. This seems to be working now. Is it ok to have the power connected on top of the blade while they are also in the powered backplane?