3.
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3. Click "Restart." After Windows shuts down and/or your computer restarts, start pressing the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, you can press the F8 key when the Boot Menu appears.
5.
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5. Use the up and down arrow keys to highlight the operating system you are trying to secure, then press “Enter” (in this case, there is only one).