Thx weirddave, I'll check that when I get home. Not sure to be honest. This morning when I got up my machine was actually off. So I was curious if it woke and then went to sleep after 1 hour which I...

I'll put it to sleep tonight like I always do and see if its on in the morning.

Thanks. I never changed the default WUs settings so guessing it was still 3AM. I went into gpedit and set the following:
Enable Windows update power mgt to wake etc - Disabled
Configure Auto...

Was running W7 Pro and 8.1 on another. Upgraded to 10 last week. Every since then both totally different machines (diff prev OS, diff MB, etc) wake up in the middle of the night. Is there some way to...