Windows system assessment tool has stopped working Win 7

How to solve Windows system assessment tool has stopped working Win 7 when running rating
Sometimes it's cache gets bugged, and will not provide a rating. Try this - (copied from another site)
Go to Start menu and find Command Prompt in Accessories.


Right-click and choose Run as Administrator, to open an Administrative
Prompt

Type in these commands:

C:\> cd C:\Windows\Performance\WinSAT\DataStore

C:\Windows\Performance\WinSAT\DataStore>mkdir Saved

C:\Windows\Performance\WinSAT\DataStore>copy * Saved

C:\Windows\Performance\WinSAT\DataStore>del *
C:\Windows\Performance\WinSAT\DataStore\*, Are you sure (Y/N)? y

C:\Windows\Performance\WinSAT\DataStore> cd \

C:\>winsat formal -v

Winsat will take a couple of minutes to run. Once winsat has completed
running, it will return to a command prompt.

C:\>

Type "exit" to leave the Command Prompt.

Now, go back to Control Panel, System and Maintenance, System, Check your
system's Windows Experience Index base score. You should see updated
performance data.

Obviously if you get any error messages along the way, make a note of them
and report back to the newsgroup.

You can also catenate the verbose output of Winsat to a file:

C:\>winsat formal -v > MyPerf.log

and inspect the myperf.log to get all the grizzly details. Run "winsat /?'