Here are the steps:
1. Press " Windows Key" + "R" to bring out Run. You can aslo go to Run through Start menu.
2. Type " netplwiz" on the Run dialog box and then press Enter.
3. Uncheck " Users must enter a user name and password to use this computer", then click on " Apply".
4. After that you see the following dialog box, type user name and the password twice, then click "OK".
5. Now restart your comoputer and see there is no log-on screen i.e it log-on automatically.
6. Have fun and Enjoy
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