Solve the Win8 operating system can not log in tutorial

  
When you encounter Windows 8 can not log in, if you create a user account with an email address and password (Microsoft account), try to log in to the Live service (such as Hotmail) on another PC To see if there is a problem with your account. If you're having trouble signing in to the Live service, try resetting your password.
If you are unable to log in to the Live service on another PC, try changing your password and logging in again on your original PC.
The best way to prevent this from happening is to create a password reset disk when you create your password. This way, you don't have to reinstall if you forget your password. You can create a password reset disk by performing the following steps:
1. Insert a USB drive or other removable media as a password reset disk.
2. At the start screen, press the Windows logo key + W, type “Create apassword reset disk”, and then click Enter.
3. Follow the instructions provided by “Forgot Password Wizard”.
Then, when you are unable to log in, click the “Reset Password" link to activate “Reset Password Wizard”.

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