Windows updates shouldn't cause problems (i hope, ya never know). Sound could but doubt it. First suspicion is Nvidia driver.
Depending how recently you updated Geforce drivers because im thinking since they've just added support for Freesync it could be causing problems. It's early days right?
If you did download OR let Geforce Experience install the latest drivers for your graphics card then revert back.
First:
https://www.geforce.com/drivers
Enter fields then download 2nd oldest driver, or if you can remember which driver you were on before then use that.
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Secondly use DDU to uninstall drivers. Install it in normal Windows then boot to safemode to run the program to wipe Nvidia drivers. Then install the driver you downloaded.
https://www.guru3d.com/files-details/display-driver-uninstaller-download.html
+ Or you can try using Nvidia's custom clean install before resorting to DDU.
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If you're using Geforce Experience, i'd advise against it. GE is a useless piece of software that causes more problems then it solves.