You may find the need to Boot your Windows 11/10 computer in Safe Mode, if it is refusing to startup normally or going through problem that require the computer to be Booted in Safe Mode.
This can be done by booting or starting the computer using a Bootable USB Drive and also by forcing the computer to go into Recovery Mode.
Boot Windows Computer in Safe Mode
In order to Boot the computer in Safe Mode, you need to find the Bootable USB Drive that you must have previously prepared to deal with problems on your computer.
If you have lost or misplaced the Bootable USB Drive, you can still create a Bootable USB Drive on any other Windows computer by using steps as provided in this guide: How to Create Bootable Windows USB Drive.
1. Boot Windows Computer in Safe Mode Using Bootable USB Drive
If your computer is refusing to start or going through problems after installation of an App or update, you should be start it in safe mode by making use of a Bootable USB Drive.
1. Insert Bootable Windows Drive into the USB Port of the computer.
2. Press the Power button to start the computer.
3. After the computer starts, select a Keyboard Layout for your computer.

4. On the next screen, select the Troubleshoot option.

5. From the Troubleshoot screen, navigate to Advanced options > Startup Settings and click on the Restart button.

6. After the computer restarts, press the F4 key to force the computer to Boot in Safe Mode.

When the computer restarts, it will be in Safe Mode, which is ideal for finding and fixing problems.
2. Boot Windows Computer in Safe Mode Using Recovery Mode
In certain cases, you may find the computer going into Recovery Mode, which provides the opportunity to Boot the computer in Safe Mode.
1. Press the Power button (for 10 seconds) to turn OFF the computer.
2. Wait for 30 seconds and press the Power button to restart the computer.
3. If the computer starts in Recovery mode, select the Troubleshoot option.

Note: If the computer does not start in Recovery mode, repeat steps 1 & 2, until it enters winRE Mode and you see “Choose an option” screen.
4. From the next screen, navigate to Troubleshoot > Advanced Options > Startup Settings and click on the Restart button.

5. After the computer restarts, press F4 to Boot Windows in Safe Mode.