I don't see anything there that looks like a problem.
99% CPU System Idle Process and 36 Processes is about as good as it gets!
As the thread is about improving Windows Experience Index, can you post a screen print of your Windows Experience Index?
In your specs it shows a CPU Pentium D 3.4 GHz.
That may be bringing down your index score.
The Windows Experience Index numbers are really not that important...
The important thing is, are you satisfied with how your system performs for your normal everyday use?