Run command SystemInfo at command prompt
OR
Start --> ControlPanel -->Administrative Tools --> Event Viewer --> Windows Log --> System
Code 6005: Tells about when system got restarted
Code 6006: Tells about when system got shut down
OR
Start --> ControlPanel -->Administrative Tools --> Event Viewer --> Windows Log --> System
Code 6005: Tells about when system got restarted
Code 6006: Tells about when system got shut down