-If using a laptop set 'when lid closes' to do nothing
-Disconnect internet if not needed
-Disable Hibernation
-shortcut for Power Options (can be used with Windows Key or WIN+R and seems to be language independant)
control powercfg.cpl
and for Advanced Power Options
control powercfg.cpl,,1
-disable Windows Updates? Not good, but may be useful if you want to be really safe, especially if internet connection is active
-Disable Windows Defender/Virus Scanner as it can be CPU/HDD intensive when doing a full scan
-Disable BSOD and set auto-reboot on System Errors (usually not needed, but check in case):
Right Click My Computer -> Properties -> Advanced System Settings -> Advanced Tab -> Under Startup and Recovery click Settings ->check the box for Automatic restart under System failure
Shortcut to get half-way there
control sysdm.cpl,,3