I can't find the right info in any thread. I have an AMD xfx r9 280a video card. When I plug the HDMI cable into the slot on the video card there's no signal. When I put it into the MOBO it works fine. I took out the card out, and put it back it, I made sure everything is plugged tightly, I reset the CMOS, I went into the BIOS to make sure it's not going to on board graphics (it's not) and i'm just out of ideas. Please if there's anything else I can try to fix this, please help and tell me. This problems happened after moving the computer, but I was very cautious. Are there any other troubleshooting techniques I could try? Any info helps. Thanks.