I'm Greg, a volunteer installation specialist and 8 year Windows MVP, here to help you.
Check for a newer Display driver on the PC or Display adapter Support Downloads webpage. While there check if there are other newer drivers to Update. You can take your time until they are all updated.
There is a known issue of incorrect Display driver being pushed by Windows Update which requires rolling back the driver. Right click Start to open Device Manager, choose Display device, then Driver tab, then Roll back.
If there is no Roll Back or that doesn't help choose Update Driver on Display device Driver tab, then Browse Computer, then Let Me Pick to see a list of all previously installed Display drivers, work backwards trying each to find one that works.
If necessary you can also go to Settings>Update & Security>Windows Update to look for the driver under Installed Updates and Uninstall it form link there. Then you can hide the driver so it isn't pushed again using the Hide Updates tool downloaded from here:
http://download.microsoft.com/download/f/2/2/f2...
If none of those work try to System Restore to a point before the problem began: http://home.bt.com/tech-gadgets/computing/how-t.... Make sure System Restore is always enabled for C with plenty of disk space apportioned (5-10%) in its Configuration settings.
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
I know for sure it wasn't caused by a windows update, it happened after I installed something called "Unreal Engine 4 Prerequisites." It was bundled in something called Endless Rampage, a stand alone game, found here: https://www.furaffinity.net/view/25182868/
It was something my cousin downloaded and wanted to play, I found it strange and absurd.
Anyway, that was what it was found in. I feel like the problem has something to do with OpenGL, I ran Minecraft, and on the launcher I had the same problem, but no problem at all in the game, fullscreen.
The link to the standalone file is here: https://drive.google.com/file/d/1WP2Tz9ijN9pQvjRwCY1iqosZjNnocGEu/view?usp=sharing