I've installed crysis 2 and installed patch1.9, dx11 pack & hi res graphic pack as well.
The issue is I couldn't load game the place where the check point saved. It's closed with error message, when I load it...So I saw lots of people has met with this issue.

So I'm going to installed the game and installed all the packs except patch 1.9, If I will do that would the game work?

please help me with that problem.....

Don't worry about my PC, It's met all optimal requirements with the game.

Patch 1.9 is a prereq to the high res patch and DX11, so that wouldn't work.