Do you have the power cables attached to the 290? Do you have the latest BIOS? The 290 in the PCI-E slot closest to the CPU? What PSU, need at least a good 550
thank you for the answer, sorry for beeing late at response but i RMA the VGA ans inspide it never worked, brand new Sapphire was recked and i got full refund for it...some new is worst than old .