Tried another hdmi cable, nothing. Tried a different slot for the video card (Asus HD 6570) nada. I bought another video card and still nothing. The fan on the card is running so i know there is power to it. It had been working fine and the other day there was no picture. I moved the tower and it came on briefly. I checked the cables on the back and while moving them around the picture came on for a few seconds and then went pink to white then off. Any help will be appreciated.