After a night's sleep

A friend's desktop computer has not been staying in sleep mode over night. At least he would discover the fans running if he got up during the night. A restart would be required in the morning.
I requested that he revise his power options to have sleep be NEVER in both choices.
He had been using a key on his keyboard to initiate sleep and I asked him to use the menu choice.
The sleep condition went through the night for the first time since the Nov upgrade .
But he reported the moment he touched the keyboard for a wake up the fans came on at a very high speed for about 10 seconds then slowed down, computer made a beep and Windows 10 proceeded to start up.
This is not a normal 'wake from sleep' activity is it?

He had no issues with this sleep routine previous to the Nov 1506 upgrade. He used the media download to upgrade.
An sfc /scannow resulted in no errors and all updates are in place at this time.

The plan is to do a repair install -in place with an iso which I burned to a cd.
1. I am wondering what power settings to adjust after this repair install.
2. Will a short sleep test on the spot be the same as an overnight time frame ?
2a. If the same condition (fans strong, beep before loading Windows) results with a short sleep then what to check?

I neglected to include that the initial Windows 10 was a clean install and there is minimal software installed at the moment.

You can try this from a CMD prompt:
powercfg /waketimers
and see if there are any pointers.

I have done the research ...but the 'friend' has not applied the recommendations. I wearied of hearing the winging and whining so offered to have the ailing box come to my house. If stuff gets beyond me, I'm not that proud; I'll head to the repair shop:)
(At this point, the simple correction would be to stop using "Sleep" ....but habits are hard to break, I suspect)

Its an odd factor that operation was fine until the Nov upgrade.
My best friend is the search engine and the disk imaging prog.