I tried to perform repair step twice but that does not help. I am currently uninstalled and downloading again to see if that helps. Has anyone with the same problem?
I am using the following Hardware which I don't believe it is hardware problem since I can run all other games such as BF3, Diablo3, NFS, Crysis2 with DX11 enabled.
Windows 8 64-bit
Intel Core2Quad Q9400 @ 3.3GHz
DDR2 8GB RAM
AMD HD7870 2GB Graphics Card w/ DX11
2560x1600 Screen Resolution on Dell 30" monitor