Way 1: Find Password with Windows 10 Password Hint
In every computer, when you create the local login password, you are also invited to create a password hint to your Windows account. You can create it with any words, phrase, sentence or any other special symbol. This password hint doesn't turn up in the usual. It will appear when you type the incorrect login password. So you can use it to help you remind your Windows local login password. By the way, if the login account is Microsoft account, you can't see the password hint.
Way 2: Reset Win 10 Password with Microsoft Account Center
If the login account is Microsoft account and you can't remember or lose the login password, then you may ask the Microsoft account center for help. Just visit account.microsoft.com and then click the login link and then follow the steps to reset your Microsoft account password. It is the same as the process to reset login password of your other websites. Consequently, you can login to the account with the new password.
Way 3: Break Password with Windows 10 Password Key
No matter your login account is local account or Microsoft account, you can always to break the password with Windows Password Key. This is a professional tool to break password of computer login password in every Windows version. It supports all Windows, including Windows 10/8.1/8/7/Vista/XP. It has 3 versions, which are Standard, Professional and Enterprise. If you have CD/DVD, choose Std edition, otherwise, pick up Professional or Enterprise edition. Now let's see how to use Windows Password Key to break Win 10 password with USB flash drive as below.
Step 1: Download Windows Password Key from its official website in another accessible computer and then to install it.
Step 2: Launch this software and then plug in a USB to burn a bootable drive with this application.
Step 3: Take the USB to your locked computer and restart it, quickly press F2, F10 or Delete button and then to change the BIOS setting to boot from USB.
Step 4: Restart it again and then you can see the software interface. Choose your locked account, no matter it is Microsoft account or Windows local account, you can reset or break the password.
Step 5: Exit the software, plug out the USB and restart the computer again, then to use the new password to login Windows 10 computer.