Only when the card is not seated properly.
I think I have it figured out. The PSU I ordered is 620w... the side of the box stats a requirement of 650w. (700w recommended.)
I the 2xGPU's really screw you over in the power department.
To be fair, when I ordered the entire system over the phone the "tech-savvy" operator should have spotted the incapabilities and pointed it out.
So I'm going to arrange a return of the card tomorrow. Although I am slightly tempted to boot into the BIOS and see if can bump up the PSU's output to 650+ but I don't wanna end up with a useless PSU as well!