Force rebuild Windows Experience Index in Windows 7

The Windows Experience Index measures the capability of your computer’s hardware and software configuration and expresses this measurement as a number called a base score. If you have installed a new piece of hardware like a GPU unit, then you can force Windows 7 to re-run all the tests and rebuild the Windows Experience Index. Here is how you can do this :

  1. Open Control Panel and choose the Small icons view from the dropdown list at the top-right.

    Show small icons view in Control Panel

  2. Click on Performance Information and Tools from the list.

    Select Performance Information and Tools

  3. Click on the Advanced Tools shown in the left side.

    Select Advanced Tools

  4. Click on the Clear all Windows Experience Index scrores and re-rate the system link as shown.

    Clear all Windows Experience Index scrores

  5. Windows will remove all your previous Windows Experience Index scores and start a new series of tests to re-rate your system. After the tests are finished, you will be shown the new score of your system.