I've purchased a MSI 4G Gaming GTX 970 4GB that was delivered yesterday. My card does not display any picture when plugged in through the HDMI [i have no other way of testing it, as it is plugged into a smart 4k TV unit, worked no problem with my Radeon 7850's]- I checked all the power cables, plugged it in into all of my PCIe 2.0 slots, reset cmos each time [motherboard ECS A990FXM-A Deluxe so it should have no problem with the card - the GTX was supposed to replace two Radeon 7850's in crossfire as well, so there should be no power issue as well]. Sometimes when you turn the pc on, the screen displays artifacts for a brief moment. All the fans and led's on the GTX970 are working. Any suggestions, please?