If you get an error message saying that there is not enough hard drive space to install the game on your PC, you will need to carry out the following steps:
1) Run the game installer. This will give you the option to uninstall any elements of the game it has installed.
2) Check how much disk space you have available, and if necessary free up some disk space.
2) Run the game installer again. If you would like to change the location for the game install, find out more here.