Some time ago I had a very nasty problem with my notebook. The notebook was set to hibernate and stored in my backbag. However, during the night the battery ran out and the notebook started (I don't know why the battery can run out in hibernate mode, anyhow). As a result, the notebook overheated because it was stored in the backbag and I had to replace one of the RAM modules.
Just to prevent anyone else having the same problem, this setting might save your notebook's RAM modules :-)
Energy Settings
-> Change Plan Settings
-> Change advanced power settings
-> Allow wake timers = Disabled
-> Change Plan Settings
-> Change advanced power settings
-> Allow wake timers = Disabled
If you run a German version of Windows, the last option is called "Zeitgeber für Aktivierung zulassen"
Fortunately this setting is disabled in Windows 10 by default (at least it was on mine). Windows 8 users might want to adjust this setting.