I just had this issue on the same build and same hardware.
All I did was click the green full screen button at the top left of the Citra window and the game appeared.
You can click it again to make Citra go back in to windowed mode and it'll stay normal.
Sorry for the slight necro, Hope this...
@Xdqwerty, Its all about tech and it has an interesting story. Lain becomes obsessed with a virtual world called "The Wired" and that she tries to explore her true identity.
yo guys the sonic x shadow generations trailer dropped today, and shadow just straight up decided, and i hate (love) to bring this dead meme up, but, it's morbin time