How did you get into Safe Mode initially ? Why did you have to enter Safe Mode ?
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I feel confused about your question, but still want to help you out.
As you said, if you are currently in Safe Mode and want to get out of it, simply reboot your computer and that's it, you will be back to regular mode.
-> You said you don't know the password of your account and can't login. In this case, I can understand follow this way: You don't remember the password of your computer and then the only option is to log into Safe Mode. If so, you can search for videos on YouTube.com to learn how to reset your Windows password with Command Prompt.
I can't post the link here as sometimes it's turned to be an illegal stuff which teach users to do wrong thing (hack the password).
-> If you have rebooted your computer but it still redirects you back to Safe Mode, definitely that you changed a few options and your computer is only booted into Safe Mode. In this case, press Windows + R, enter msconfig and press the Enter key to open System Configuration. In that, uncheck the Safe Mode box and reboot your computer.
But if you mean you want to access Safe Mode, then here are a few ways you can use to boot your compter into Safe Mode quickly: