How to disable username retention for Windows 7

Method 1. click Start. In the displayed start menu window, click Control Panel. on the Control Panel, double-click "Administrative Tools" and double-click "Local Security Policy" in "Administrative Tools". 3. in the left-side security settings window, double-click "Local Policy", and then click "Security Options" 4. in the right window, find and double-click to open "Interactive login: do not show the Last User Name" 5. on the local security settings tab, select "enabled" 6. click "OK" to make the modification take effect, and close the local security settings window. As long as you want, you can make others unable to see your record.