If you want to track the amount of time you or someone else is spending on the computer, you can use Windows Command Prompt to find out how long the computer has been running. This is particularly useful if you want to know how much time you've been spending in front of the monitor, or if you want a general idea of how long your children have been using the PC.
Click "Start," "All Programs," and then click "Accessories." Click "Run." Type "cmd.exe" into the dialogue box. Click "OK."
Type "systeminfo" into Command Prompt, then hit "Enter." Windows will scan your computer for system data. This may take several minutes.
Once the scanning process is complete, look for "System Boot Time" in the list of information displayed to find out how long the computer has been running since last start-up.
You can also use Windows Task Manager to track system up time. Press "CTRL," "ALT" and "ESC" simultaneously to open Task Manager. Click the "Performance" tab, then look for "Up Time."
The system boot time will only tell you how long the computer has been running since start-up. It does not necessarily indicate that the computer has been used constantly for the amount of time displayed.