Hello friends I am going to tell you all about my experience on this laptop which I had used two years.
LenovoB40 is a very unfriendly laptop. It always get hanged while using multiple applications at the same time.When I opened many folders at the same time it displayed a dialogue of not responding . Automatically it got turned off and kts battery backup was also not good.
It does not supports big games such as IGI AND GTA san andreas and takes a lot of time to open.It does not have a good RAM AND graphics.the processor is also of very low quality.I suggest you not to buy this laptop.