Hey thanks for getting back. In the mean time I have been trying to figure this out but this is not a Unreal engine issues as I kept on testing different games it keeps happening. I did manage to find some logs in the event viewer.
https://pastebin.com/Q38D3bk9 https://pastebin.com/8ftM6SZF
Also including the dxdiag of the system
https://pastebin.com/yYDuwFf6
It seems to happen randomly I could be playing Valves the lab for 20-30 minutes before crashing. And other games crash within minutes. I tried going steamvr beta. reducing all the settings to minimum disabling the camera and bluetooth . Tried the reset which deletes the drivers and you replug your vive back in. Removed the OC on the CPU and GPU.