game installed but will not start

I seem to have the same problem. I'd been playing the first game with no problem. Now, suddenly, the game crashes without the start screen coming up. I've tried to repair install and run the .exe as administrator to no avail.

dxdiag:

 Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120830-0333)
           Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
       System Model: h8-1010
               BIOS: Ver: CAR_711.ROM vCAR7.11
          Processor: Intel(R) Core(TM) i5-2390T CPU @ 2.70GHz (4 CPUs), ~2.7GHz
             Memory: 8192MB RAM
Available OS Memory: 8174MB RAM
          Page File: 2720MB used, 13627MB available
        Windows Dir: C:\Windows
    DirectX Version: DirectX 11

          Card name: NVIDIA GeForce GTX 550 Ti
       Manufacturer: NVIDIA
          Chip type: GeForce GTX 550 Ti
           DAC type: Integrated RAMDAC
         Device Key: Enum\PCI\VEN_10DE&DEV_1244&SUBSYS_15573842&REV_A1
     Display Memory: 4049 MB
   Dedicated Memory: 977 MB
      Shared Memory: 3071 MB
       Current Mode: 1920 x 1080 (32 bit) (60Hz)
       Monitor Name: Generic PnP Monitor
      Monitor Model: SMS27A550H
         Monitor Id: SAM07CB
        Native Mode: 1920 x 1080(p) (60.000Hz)
        Output Type: HD15
        Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 9.18.0013.1070 (English)
     Driver Version: 9.18.13.1070
        DDI Version: 11
       Driver Model: WDDM 1.1
  Driver Attributes: Final Retail
   Driver Date/Size: 12/3/2012 09:47:14, 18045968 bytes

I hope this is the info you need to give me some suggestions.

Edit: It's showing that it's patched to 1.02.