How to Start Windows10 in Safe Mode.
- Click or tap the Start button, and then the Power button. Hold down the Shift
key when you select Restart.
- Next Page, select Troubleshoot-->Advanced options-->Startup Settings.
- In the Startup Settings screen, Click the Restart button. The PC will reboot,
and bring you to a Startup Settings screen.
- Next select Enable Safe Mode or Enable Safe Mode with Networking.