I just built my pc and installed a asus r9-280x. The first time i booted it up it had two vertical lines go through the center of the screen. I just figured that it was driver issues so put in the asus cd that comes with the card and put that in after getting windows 8 setup. After the asus cd installed the drivers it was fine after the restart. No vertical lines so i was ecstatic. However while waiting for steam games to download I decided to play minecraft. And it worked wonderfully for 5 minutes. Then it crashed. I restarted it and crashed again in the minecraft launcher. Tried it once more and it crashed on google chrome. It would just freeze so i was forced to restart it. After i restarted it the last time the same vertical lines were back. Now it won't even boot past the gigabyte motherboard loading screen to windows. After the loading screen it just goes black. I really have no idea what to do now. Ive tried reseating the card, tried different power cables, tried different pcle slots, and i tried hitting it with a hammer(just kidding). Im really just at a loss of words and don't want to have to RMA it.