Screens go black, retu with hit of Windows key

So I have a dual-monitor setup and every once in awhile (pretty random amounts of time), both of my monitors will go black. I can't fully characterize this at the moment because I haven't used my desktop in awhile so it hasn't happened for some time and now that I'm back at it, I forgot to pay attention. If I remember correctly, all sound and other functions are still operating correctly while the screen goes black. I have an RGB keyboard and mouse and both still cycle through colors. I used to try and hit a whole bunch of keys on my keyboard and nothing would work. I also, powered my monitors off and back on again and fully unplugged them from the computer. Just today, it happened again and I just happened to hit the Windows key because I was trying to do a restart using hotkeys since I couldn't see the screen and the screens both instantly retued. I am under the assumption that this is a video card issue since it's the screens going out but I'm not really sure. Please let me know if you have any ideas of possibilities causing this or troubleshooting steps.

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