When i play games on Laptop, it always lag?

Well I have a laptop the Acer V5-473p with intel Core i5-4200U 1.6GHz with Turbo boost upto 2.6Ghz, and intel HD Graphics 4400, upto 1792 MBB dynamic video memory. Then When I play the Prototype, Minecraft/Assasins Creed/Left for Dead/Counter Strike. Lol. They always lag at screen, when i move my mouse the game is running slow. Is there a problem?

Read more: When i play games on Laptop, it always lag?