XLegion,
ORIGINAL: XLegion
Not long after, Matrix released a small mini-patch that CORRECTED this problem. I installed it and AGAIN the game worked fine. BUT, after a time I decided there was much about the game that I didn't like and wanted to wait for a more comprehensive patch that would fix many of the HISTORICAL anomalies that I did not care for.
OK, now we come to the BETA patch. I downloaded it. I installed it. And now NOTHING WORKS!. I DID NOT un-install the game nor change anything about my computer. The common denominator was the BETA PATCH.
Not necessarily. Did you run the game right before installing the Beta Patch? If you hadn't been playing for a while, something else might have changed on your system that caused this problem and you didn't realize it until you installed the beta patch. The fact that the original game installation without the beta patch does not work is a clear indication of this. The patch does nothing but replace files in the game folder, so there's no way it can screw up your system or screw up your original installation before you've even reinstalled the beta patch.
My first suggestion is to upgrade your audio drivers. First, they are from 2004. Second, you've reported some sound issues from the beginning and if something got messed up here, it could cause the game to crash.
Second, update your video drivers, which are from 2005. Even if these drivers worked fine before, if something went wrong with them, an update will hopefully clear that out.
Finally, make sure that when you reinstall, you have turned off all background anti-virus or other security software. This is generally the #1 reason for a corrupted installation.