HP z600 Motherboard Hacking

[yn_spr]

Hello everyone,
I have HP z600 motherboard with serial code SP#461439-001 AS#460840-002 REV 01.
3 x 4GB ECC DDR3 RAM, Single intel Xeon E5506 2.13GHz and Quadro FX 580. I use standar 24 pin ATX power suply and convert to 18pin, dual molex to 6 pin cable.
When I power up the motherboard, everything works fine. The Cpu fan spinning, chipset fan is on, VGA also working as well. But the display is blank, No display at all. Please help me what should I have to do?

 

[Calvin7]

Sounds as if you forgot to connect the memory power cable.

http://www.tomshardware.com/answers/id-3377556/installing-atx-psu-z600.html

http://andybrown.me.uk/2014/11/01/z800/

 

[yn_spr]

BTW I do not forget to plug the memory power.