I think by using some simple software, we can't improve the graphics. Appropriate hardware like graphics cards is to be used. He you are preferring for playing games without graphics card , then there is a software called 3d analyzer. I don't know this works properly, you just try it and don't forget to give your feedback.
Hi Sulthan, If you are using laptop your graphics functionality will works without the help of graphics card. It is because there was some graphics functionality processed in inbuilt function. This helps regarding your graphics performance in your system.