Two ways to get into Safe Mode on Windows 8.1 (which is likely the version you have):

There are two ways to get to the Windows Startup Settings screen in Windows 8 :

  • If you're not signed in to Windows, tap or click the power icon from the sign-in screen, hold Shift, and then tap or click Restart
  • Or, if you're already signed in:

    • Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings.
      (If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, click Settings, and then click Change PC settings.)
    • Under PC settings, tap or click General.
    • Under Advanced startup, tap or click Restart now.
    • On the Choose an option screen, tap or click Troubleshoot.
    • Tap or click Startup Settings.
    • Tap or click Restart.

    • On the Startup Settings screen, choose the startup setting you want.
    • Sign in to your PC with a user account that has administrator rights.

      http://windows.microsoft.com/en-CA/w...ding-safe-mode