I installed a new hdd today and my R7 stopped working (black screen). I have an R5 and put it in and it works fine. My system doesn't recognize the R7, it doesn't show up in device manager.
Please try uninstalling the AMD drivers and reconnecting the R7. With the drivers uninstalled are you able to boot into Windows and update the drivers?
If you respond please read this and let us know which model R5/R7 you are using. Thank you.
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