How can you see..

!30

What are all the posibilities to see , how long was your PC ( Windows XP ) open.

one posibility is : run -> cmd ->systeminfo

Do you know other posibilities ?

agustinchernitsky

Check de event security log for logon-logoff events!

JDMurray

There are many small utilities that keep track of system uptime, such as this one: http://blogs.msdn.com/gusperez/articles/91734.aspx

A program can call the GetTickCount() Win32 API function to find the current system uptime, but I believe that it rolls over every 49 days or so.

PCHoldmann

net statistics workstation

will include in the output a line like

Statistics since 8/19/2006 9:44 AM