Windows7 system how to check the recent use of the computer

A friend of mine recently installed Windows 7. He always felt that someone used his computer, but he was always unsure. He wondered if anyone used his computer and asked if I had a way? I said it would be fine: < Br>Start Windows 7, enter the edit group in the search bar, and immediately search for the edit group policy, click to start the program to edit the group policy. Expand the Computer Configuration/Administrative Templates/Windows Components/Windows Login option in the tree list on the left side of the Group Policy, double-click on the right side to display the information about the previous login during the user login, and pop up the message about the previous login during the user login. Box, the default state is not configured, select the single option enabled, click the OK button.
Click the close button in the upper right corner of the window to exit the edit group policy, restart the computer, so the system will prompt the last login before entering the system desktop, including the login success, and the detailed login time. In the future, if anyone uses your computer, it will be clear at a glance.