View Switch Machine
Open "My Computer", C disk there are many files under the Windows directory, find a SchedLgU.txt. It is a "scheduled task" log that faithfully records the execution of the computer's scheduled tasks, as well as information about each boot of the Windows system. Even if he secretly opened the computer in the middle of the night, I will know it in the morning.
View Document Records
Start → My Recent documents, click here to see what he has recently written documents, see movies, pictures.
View Internet Records
As long as he uses IE browser to browse any site, in the Windowshistory folder will automatically keep records, the most recent can record the 99 days of all the operation process, including what to visit the site, see what pictures, open what files and other information.
The simpler way is to open IE browser, the address bar on the edge of a Drop-down button, click, you can see the recent Internet more frequent site.