To open dxdiag open your start menu and click run it should be just above the shut down button.
![[image loading]](http://i.imgur.com/K6fLE.jpg)
Type in dxdiag and click OK.
![[image loading]](http://i.imgur.com/IoJfV.jpg)
Now you should have the dxdiag window open (if you haven't run this before then you won't have the fields filled in) and run the diagnostic.
![[image loading]](http://i.imgur.com/M1hJs.jpg)
Now for the important information:
![[image loading]](http://i.imgur.com/zOEdn.jpg)
![[image loading]](http://i.imgur.com/19BLb.jpg)
That's it. Just copy all that into your tech support thread and people looking to help you will have an easier time.