Mostly Black screen after launching Combat Mission
After reinstalling it is possible to launch Combat Mission (any CMx2 version) and see a black screen with only Module icons along the bottom right. This is always a symptom of some form of an incomplete installation.
Specifically that one or more data files (.brz) are missing from your Data folder. This can happen either through a manual error (accidentally moving/deleting .brz files) or from incorrectly patching.
The solution is to try reinstallation again.
The most common problems happen when trying to reinstall CM Battle for Normandy from v1 though to v3. The following link should prove helpful for such a reinstall:
Note, there is a very different problem with similar symptoms. If you see a 100% black screen at launch this article may be helpful: