System Information does not reflect OS upgrade

[undertheradar84]

I have a Inspiron 750. It had XP on it. I upgraded to Windows 7. Now I cannot play Amazon videos. They think I have XP. When I checked system info, it says XP. How do I change this?

 

[Alabalcho]

Right-click on "My Computer", then Properties. Make a screenshot, put it on e.g. Imgur.com, and post the link here