How to Solve fix Sudden Restart / Shutdown problem in windows 7/8/10

How to solve fix suddenly Restart/Shutdown problem in windows 7/8/10

Go to Start 

Type view advanced system settings

Advanced

Startup & Recovery 

Setting 

Unchecked  (Automatically Restart)

Go to

Start 

Type Regedit   

HKEY_LOCAL_MACHINE

SOFTWARE

Microsoft (Right Click)

go to 

New (Key)

WindowsUpdates 

go to 

Microsoft (Right Click)

go to 

New (Key)

AU

Go to (AU) Right Site 

Key

NoAutoRebootWithLoggedOnUser 

Modified 

Value 

1