You are mining bitcoins with GPUs which no one informed today would be doing due to the massive difficulty in the current bitcoin network which is why no one's around to help any more. If you want to get back into bitcoin mining affordably, buy yourself a USB stick like the AntminerU2 instead which does 2GH for much less cost than your GPU and use your GPU for graphics the way it was intended.
OR try one of the other algo's like scrypt or scrypt-n.
For now, its still possible to mine those with a GPU