1. Click the Start button in the lower left corner of the desktop; In the search column, enter cmd;; Open cmd.exe, pop up a DOS window, and enter cmd.
2. In the pop-up DOS window, enter the DOS command eventvwr and press enter; The Event Viewer window will pop up.
3. Find the option Windows Log in the column on the left side of the Event Viewer window, and then click.
4. The middle column shows five kinds of logs of win7 system (application, security, setting, system and forwarding events). According to your own needs, choose the type of log you want to view. Double-click the selected log name.