I don't really know, Linda.
Do you think your antivirus could have blocked the game install -- or part of the game install?
If not, you could try uninstalling the game again and running ccleaner --> Registry --> Scan for Issues --> Fix issues.
You may want to use Revo Uninstaller instead of the Windows uninstaller.
My guess is that the black screen you originally had could have been due to incompatible video drivers. But clearly you have more problems now with the reinstall since there was no desktop icon or other stuff when you reinstalled the game.
I'm assuming you didn't pick up some malware that's interfering with the game or with Windows installer and uninstaller.