I recently built a gaming PC with an R9 280x graphics card. It worked fine for the first few days on my monitor, and when I went to my friend's house it worked fine on my his TV for the first night, but stopped working the next morning. We took it back to my house to see if it would work with my monitor as it had just yesterday, but it didn't. We have tried multiple HDMI cords, moving the card to a new PCI slot, and we even got an R9 255X out of my old computer to see if it would work, but to no avail. Is this a problem with my motherboard, or drivers?