Games issue

Are the games genuine? I would also probably say your GPU isn't good enough to run either games..

Most likely the games won't run that Mobile GPU is very weak and even at the lowest settings would struggle

I actually had that graphics and was able to play Resident evil 4 but choppy at lowest setting even adding more ram helped it but not by much

You're not running Hitman Absolution on that GPU. It's not powerful enough for even the lowest settings, and your CPU isn't good enough either. The only requirement you meet is Ram for that game.

Your CPU and Ram are fine for BF 3, but again, your GPU isn't good enough, not even for the lowest settings.

It doesn't matter that "other games" will run on your computer. Different games have different requirements. The fact that you can run Mine Sweeper and Solitare does not mean that you can run Minecraft. That same principal applies to any games. Just because some games run, does not mean that others will. That's why system requirements exist, so you can tell if your system will run something before you buy it.

Battlefield and Hitman Absolution aren't going to run on your laptop, your graphics card isn't nearly good enough to run either one of them even on the lowest settings.

Sorry to tell you, but there's nothing you can do to make them run on what you have.