I believe the latest driver which was released on August 29 is only for the Haswell products.check this topic.No more driver support for the HD 4000?
This is the links for the HD 4000's latest driver.Try if this works
As Hary said, the latest driver we released is for Haswell platform only but based on the dxdiag report report your computer is running a very old driver so you will find improvements when updating the graphics driver.
The driver you can download is this:
During the installation process you can find problems or error messages. These errors appear because your computer is branded system and you are trying to install our generic driver.
Here you can find instructions in how to install the driver if you encounter problems during the installation: