which is what i am saying. the only cards that require a crossfire bridge are solely the cards that have 6 pin requirements. Since you do not have 6 pins on the cards, you do not need a crossfire bridge.
while both cards are inside the computer, check bios to make sure that both cards are detected by checking the PCI-E slots
Unfortunately, according to the Crossfire compatibility chart, only the low end HD5xxx series cards (marked in blue) do not require the Crossfire bridge. All of the HD 6xxx series cards require it:
Edit - Thanks for the link. Revro. Now it's actually readable.