The link provided appears to detail it pretty well , not sure what i can clarify without knowing what step is causing you issues
like hit the save all information button and save the text file to the desktop for example is the first thing to do
per the guide link, either of the below will do using notepad
To post your DxDiag either:
1. Select the 'Choose file' button below the post box
2. Find the DxDiag file and select it - hit Open
3. Add text to your post and hit Submit
OR
1. Open the text file, select all the text inside (Ctrl + A) and copy it (Ctrl +C).
2. Go to http://hastebin.com/, paste the contents of your DXDiag inside (Ctrl+V) and click Save on the webpage (Ctrl+S).
3. Copy the link of the page in your post, along with a precise description of your issue.
