I recently upgraded to a MSI Z97 Gaming 3 and an Intel i7 4790k. I kept the same GFX card, which is a Diamond Multimedia Radeon HD 7850. The problem I am having is that when the card is plugged into the motherboard, and receiving the 6-pin power from the PSU, my monitors won't turn on -- They are connected straight to the integrated graphics on the motherboard-- However, when the GFX card is receiving no power from the PSU, it boots up like normal. But, the downside is, I can't play any games.