Is there any reason why you have not Validated Windows yet?
Go to the Microsoft Diagnostics Site
Be sure to use Internet Explorer for this (not Firefox).
Click "Start Diagnostics" button. If it shows some items failed, follow the steps to fix it, and click "Try Again".
Then Please visit This website using Internet Explorer.
Follow the instructions to Validate Windows, then run MGADiag.exe again and post the new log in you're next reply.