Here are the instructions for starting your Windows 10 computer in safe mode, if you cannot gain access to your desktop:

  1. move the critical error window out of the way by dragging it
  2. Press ctrl-alt-del and choose Task manager
  3. In task manager, click “More details” at the bottom
  4. Click on File → Run new task…
  5. In the run dialog, type “msconfig” without the quotes. Place a check in the box provided, and click ok.
  6. in the system configuration window, click on the Boot tab
  7. Place a check in the box for Safe Boot, and change it’s radio button to Network, then click ok
  8. When prompted to restart, please do so.

Note: You do not have to undo this method in order to reboot in normal mode.