Okay, here is the diagnostic report.
I don't see an answer to the question of what all you install before you try the game.
Beyond that...
If you look in the last section of the DXDIAG report (Diagnostics), you will see multiple memory leak errors. So, it appears something is wrong with memory. This could be a bad configuration in BIOS (e.g. wrong speed set), how you have memory cache configured in Windows, or just a failing DIMM.
Although I would not think that the memory config would cause the issues you are having, it does appear to be something you'll want to resolve.
What would make more sense to me is if the rights to your Windows account are not quite correct for wherever you installed the game and where the user files are kept (two different places for this game). Did you install with a Windows account with admin rights and are you playing with the same?
