You posted 4 identical screen shots of the same, mostly un-useful information.
The Activity monitor screen shows CPU selected,when it would be more relevant to show the Memory tab (or Energy, or both)
You can also scroll the process list up, so high usage processes can be seen in the screen shot. (Move the "out of memory" window out of the way, too (If possible) )
Also, can you tell how full your hard drive is? (Might be important)