This article explains how to reset the password on a Lenovo laptop. These instructions apply to all versions of Windows.
How to Bypass Lenovo Password – I Forgot My Password – Solution
If you use your Microsoft account to sign in to your PC (i.e. your email address), reset your Microsoft account password using another device, such as your phone or another computer. To do this, visit Microsoft’s Recover your account page. After you reset your Microsoft account password, you’ll have the option to set up security questions. This is highly recommended in case you forget your password again.
If you are using a local account and you know your password, log in and change your Windows password. If someone else can log in to the computer and has administrator rights, you can have another user change your password.
If you can't get past the login screen and there is no admin user you can use to reset your password, your best bet is to use a Windows password reset disk. However, this method will only work if you created the Windows password reset disk before you lost your password. Once you create a reset disk, you can use it as many times as you like, even if you change your password in the future.