Why crysis 1 in my pc (windows 7 -64 bits ) don't work ?

i have windows 7 pre activated windows,and core i5 processor with 512mb nvidia graphic card geforce gt 330, msi motherboard.

so crysis 1 game is not working in this and also modern warfare is also not working ,so please solve this problem .Why crysis 1 in my pc (windows 7 -64 bits ) don't work ?
have you updated DirectX?

also c++ redistributable



i had this problem when cod blackops came out, the above fixed it



your pc is fast enough to run both gamesWhy crysis 1 in my pc (windows 7 -64 bits ) don't work ?
Are those games u brought original