Computer automatically turns off during long Media Encoder Queue

My PC is set to "never" sleep. Despite this, multiple times while running a long render queue (over 150 clips), my computer would go to sleep. When i would come check on the render, the fans are running and sounds like everything is running fine, I would move the mouse, the computer would seemingly restart and the start up sequece comes on screen. I log in, and all programs are closed including media encoder, and I got to look in the export folder and the last video file was created an hour ago, and the rest are not completed. Why is this happening? The computer is not turned off when I come back to it, but by moving the mouse to awaken the screen, the computer seems to restart. Also, even though there were clips that completed rendering, they are still in the queue when I open media encoder up again after the ghost restart.

Normally I have all my projects/cache/program/video files on their respective internal ssd's as per Premier Pro requirements, But this is a project was a last minute request for a client and video files are on a external HDD. The rendered file location is also on the external HDD. 

Anybody else experience this or have some insight?  Is this because I am trying to render H264 clips onto an external HDD?

Computer Specs: 

CPU - Ryzen 5950X 16 Core

RAM - 128 GB

GPU - RTCX 3070

4Tb M2 SSD

Windows 10 Home Version 22H2

Media Encoder 2020 V14.9