9. From the Start menu, go to Settings, then Control Panel.
10. Double-click on Power Management.
11. Click on the Advanced tab.
12. Click to put a dot in the box that says Prompt for Password.
13. Click OK. Now when your computer comes out of hibernation, you will be prompted to supply the password that is listed in Password Properties.
You can change your password by going to the Start menu, Control Panel, then Passwords.