Using Troubleshooting Options. Step 1: To boot Windows 10 in safe mode, very first step Go to the Start menu of Windows 10 and click Power Option on the top-right of the Startup menu. Step 2: Press Shift + click to restart Or Use the following procedure instead of the preceding procedure.ow press F8 for the boot menu, choose Safe Mode and press ENTER and turn off bootloader. Go to the graphical one by entering the command: With Windows 10 released, I guess you are all eager to, or have already installed, the Technical Preview of Windows 10.