I have a game which I would like to install but whenever I insert the CD/mount the image, when the menu pops up it shows "Play" rather than "Install". The Control Panel does not show the software listed under installed programs.

I think this is because of a previous installation which didn't complete correctly.

This is on Windows 7 64-bit. I do not know much about software installation. Would somebody be able to point me to which parts of the registry I should delete? I am assuming there is something in the registry making it think the game is installed? I just need to know the locations I can search for something resembling the game and delete them.

  • Why don't you just manually run the setup executable? – Ramhound Aug 28 '15 at 18:36
  • I wouldn't go off deleting things in the registry. There are actually tools that can uninstall partially installed (or incorrectly installed) software. Use one of them instead. – rrirower Aug 28 '15 at 19:29
  • @rrirower but how can the tool detect what to delete if the Control Panel isn't even aware of it? – user997112 Aug 28 '15 at 19:41
  • 1
    These "tools" can scrape the registry looking for what the system thinks is installed. It's safer than you guessing at what should be removed. – rrirower Aug 28 '15 at 19:44
  • fyi, knowing about the registry certainly makes it sound like you know at least a little about software installation and computers in general. What game are you trying to install specifically? – MonkeyZeus Aug 28 '15 at 20:13

I would be comfortable removing a couple of things from the registry on this.

  • regedit.msc
  • HKLM\software\yourProgram - delete
  • HKCU\software\yourProgram - delete
  • verify that there is no directory for the program in Program Files x64 and x86
  • if there are delete those directories.
  • if you cannot delete them because they are in use, reboot in safe mode and delete it.

Alternatively, REVO uninstaller does a good job if it can detect the program.

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