Windows 8.1 can't be manually/automatically sleep, or sleep can't wake up

  

Symptom:

Upgrading Windows 8.1 can't be done manually, automatically sleep, or sleep can't wake up, turn off mixed sleep.

Solution:

Control Panel---Hardware and Sound---Power Options---Balance Right Change Plan Settings (or select your own selected mode change)---Change Advanced power settings --- sleep --- allow mixed sleep --- off --- save.

Copyright © Windows knowledge All Rights Reserved