Hey just got my new msi gtx 970 graphic card and its first time im foing this! First time i get the text: power down and plig in pcie to your graphic card. So i take out 6pin and put the short cable that i got with it (6pin on one side and 8pin on the other) onto my 6 pin cable that i got with pc!. But now my monitor wont even find the pc. Pls help! Sucks with computers!!