You're only using the GPU to mine, not the CPU. You should avoid using your CPU as you'll produce almost nothing from it - hell, you probably shouldn't even GPU mine lest you cook your notebook.
well it runs at 40.0c. I don't think its that bad right?
What exactly is 40C? If you mean the CPU, that's probably because it's not mining. If you mean the GPU, then I stand corrected, and you might as well carry on.
If you mean the outside of the computer, or the heat sink, or anything like that, check the internal temperatures.