How to start safe mode when Win8 computer is turned on

        1. Start the computer and start up to Windows8. When the LOGO is turned on, press and hold the power button to force shutdown.
2, repeat step 1 several times, until after the start appears "select an option", or repair the computer interface.
3, then go to “Troubleshoot -> Advanced Options -> Startup Settings”—>“Enable Safe Mode”.
Finally, we enter the win8 security mode. The win8 system recovery console has a trigger mechanism. When we can't start win8 several times, the advanced startup interface will appear, allowing the user to choose to repair, restore, etc. Operation, if you can't open the machine, you can't log in to the desktop, you can use this method.