Hp 4540 notebook has a screen of 15.6 inch.i5 processor and it has 4GB ddr ram.It works on windows8.It has many features like wifi bluetooth and games card reader are also in this notebook.keyboard is very user friendly.It is also an eye catcher.The lid’s back consists of matte, brushed aluminium.The tools are not needed to open the maintainance cover.Due to above performance It is my favourite notebook.It is best for bussiness and new things and searching people.