dict.leo.org ->elaborate...

ahh, elaborate is something like ausführlicher in german. Had to look it up, I'm not very english savy

Are you trying this on a Windows Operating system?

Windows doesn't activate (or recognize if you want) graphic cards that don't have a display/monitor connected. If Windows doesn't activate the card GUIminer cannot run calculations on it too.

Is there something connected to the card beside pcie and power?