Boot from Windows install disc and open command prompt (Shift+F10)
Check the current boot mode:
X:\>bcdedit
...
Windows Boot Loader
-------------------
identifier {default}
...
nx OptIn
safeboot Network
Remove the Safe Mode with Networking option:
X:\>bcdedit /deletevalue {default} safeboot
The operation completed successfully.
Check boot mode again:
X:\>bcdedit
...
Windows Boot Loader
-------------------
identifier {default}
...
nx OptIn
/windows | Apr 17, 2016