check to see last time windows was installed?

[Stan W.]

how can i tell when the last time that i installed windows on my computer?

 

[Nicholas]

Open XP's "Help and Support" and type: HEALTH , and hit enter.
Then click on "Get Information about your computer".
Next, click on "View the status of my system hardware and software".

 

[Doug Knox MS-MVP]

Open a Command Prompt window and type in SYSTEMINFO.