All games that run on UE4 crash on startup

All parts were brand new as of March 2018.

I have reinstalled the games on both drives before and I’ve manually set Pagefile to D as you suggested. Sandstorm actually managed to make it to main menu, but crashed within 2 seconds.

I reset pagefile to automatic and tried removing 1 stick of RAM and then switched to the second, no effect what so ever.