You can try starting the game while disconnected from the internet. Also try a clean boot, and please post a dxdiag log.
dxdiag
Windows XP: Go to your start menu and click on run. Type in "dxdiag" and hit enter
Windows Vista / 7: Press the windows key on your keyboard
or click on the start menu. Type in "dxdiag" and hit enter.
Now click on the button that says "save all information".
It will prompt you to save a file. Save it where you can find it.
Then
zip the file and attach it to a reply in this Thread.
Booting clean in Windows XP:
1. Click Start --> Run --> Type MSCONFIG --> Click OK
2. On the General tab, choose Selective Startup
3. Uncheck Process SYSTEM.INI file
4. Uncheck Process WIN.INI file
5. Uncheck Load Startup Items
6. Click on the Services tab
7. At the bottom, check Hide All Microsoft Services
8. Uncheck all boxes in the window or click the button labeled Disable All
6. Click OK
7. Click Restart
8. After reboot, run the game to see if it works.
After performing the necessary steps, restore your system by doing the following:
1. Click Start --> Run --> Type MSCONFIG--> Click OK
2. On the General tab, choose Normal Startup
3. Click OK
4. Click YES, when asked to restart your computer
Based on
Will's post