Unreal Engine keeps freezing my whole computer

I am using Unreal Engine versions 4.16.2 and am experiencing random freezes of my entire computer. It doesn’t matter what I am doing in the editor, it just randomly freezes causing me to have to do a hard reboot. The editor runs very smoothly and doesn’t lag at all which is why I’m confused as to why all of a sudden everything stops.

Unreal engine is the only application that I am having these freezing issues with. It freezes even with blank projects. It also freezes even if I leave the editor open and walk away from the computer for 20 minutes or so.

I have an Nvidia GTX970 with drivers up to date.
Intel Core i5-6400 cpu at 2.7GHz, 4 cores.

I’ve also checked to see how much of my system resources the editor is using and it seems to be hovering around 55% CPU usage and also around 50% of my memory. Not sure if this is high or not.

Unfortunately I cannot upload a crash report because the editor never really crashes, just freezes causing me to force shut down.

Also I’m attaching my dxdiag for any additional information needed.
I appreciate any help with solving this issue as I haven’t been able to really use UE4 since the freezing began.

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Just to clarify the CPU usage is actually around 45% and 980MB memory usage. I was looking at the wrong numbers.