I contacted AMD support and I was told that it’s a faulty card and that I should come here for support instead. I have the R9 270 and it appears to be faulty. I successfully installed the card and driver, and when I restarted the computer it worked. I then went to bed and when I woke up and turned on my computer, the monitor wasn’t getting anything. Since then, I haven’t been able to get the card to work at all.