If your on XP

go into Task manager (ctrl+alt+del)
Processes
Click View
Click Select Columns...
Click CPU Time
Click OK
Look for a process called System Idle Process

this process starts from the time windows starts

This won't work if you are running CPU intensive tasks, such as this project, as the ide process only shows the total idle CPU time.

You can always look at your event log. The time the event log service started will be your start time.

-right click My Computer
-select manage
-click on event viewer, then system

If you have an always on internet connection you can also look at your "connected" time. The easy way is to have the connection always show in your system tray then double click the icon when you want too see the total time. However this will only equal your uptime if you have an uninterrupted connection. This selection is found in "network and dialup connections".

Hi vaio,

How can you use Motherboard Monitor to calculate the system up time? I am puzzled. Are you sure you are not confusing this with some other program?

mycrofth

Erm, just set it to run at boot.........the interface then shows you how long the rig has been up

I have been trying the various suggestions on my Windows XP Home system. So far, the only one that seems fairly reliable is Paul Schlaffer's post:


After clicking on system, scroll down the list of events logged until you come to something like:
Information 8/22/2005 5:00:31 eventlog

If you click on this, a popup will tell you that this is the time that the event log was started or stopped. The event log starts when the OS boots up. It stops at each normal shut down of the OS. A power outage will not be recorded, which is why I am describing this method as only 'fairly reliable'.