How to Change Computer Password?

In Windows 10 and Windows 8:

• Using the search bar, type sign in options and then choose Sign-in options from the list of results. If that doesn't work, open Control Panel, choose User Accounts (Windows 10) or User Accounts and Family Safety (Windows 8), then the User Accounts link, followed by the Make changes to my account in PC Settings, and finally Sign-in options on the left.
• Under the Password section, click or tap Change.
• Enter your current password in the first text box and then click Next.
• For Windows 10 users, enter your new password twice to verify that you've typed it correctly. You can optionally type a password hint, too, which will help remind you of your password should you forget it when logging in.
  For Windows 8 users, enter your current password once more on the Change your Microsoft account password screen, and then type your new password twice in the provided text boxes.
• Click the Next button.
• Click Finish to exit the Change your password or You changed your password screen.
• You can now exit any other open Settings, PC settings, and Control Panel windows.

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In Windows 7, Windows Vista, and Windows XP :

• Click on Start and then​ Control Panel.
• Click on the User Accounts and Family Safety link if you're using Windows 7.
  If you're using Windows XP (or some versions of Windows Vista), this link is instead called User Accounts.
  If you're viewing the Large icons, Small icons, or Classic view of Control Panel, you won't see this link. Simply click on the User Accounts icon and proceed to Step 4.
• Click on the User Accounts link.
• In the Make changes to your user account area of the User Accounts window, click the Change your password link.
  For Windows XP users, look instead for the or pick an account to change section, and click your user account, and then click Change my password on the following screen.
• In the first text box, enter your current password.
• In the next two text boxes, enter the password you would like to start using. Entering the password twice helps to make sure that you typed your new password correctly.
• In the final text box, you're asked to enter a password hint.
  This step is optional but I highly recommend that you use it. If you try logging in to Windows but enter the wrong password, this hint will display, which hopefully will jog your memory.
• Click on the Change Password button to confirm your changes.
• You can now close the User Accounts window and any other Control Panel windows.