Hd 7870XT (Club3D) not giving display and no boot but working

[MakotoSGT]

Hello,
So i have a Club3D 7870XT JokerEdition.
On a FSP 900W PSU.
When i put in the card, it wont boot or give me any display, otherwise the card is getting enough power. :S
But when i put in back my GT240 or Intergrated Board it boots me to windows.

What can be the problem? I wasted 40k (400$) on this....
Any fix please?


i even tried another JokerCard to test it and it does the same.
but other 7770 works fine as well :S

 

[rgd1101]

and you plug in the 2 pcix 6 pin connector?

 

[MakotoSGT]

and you plug in the 2 pcix 6 pin connector?

Yess.
i do.

 

[MakotoSGT]

Solved,
Upgraded to H77 chipset.
it was my old mobo.

 

[nforce4max]

LoL, typical issue with older boards.

 

[MakotoSGT]

Best answer selected by MakotoSGT.