Surely you've installed a program using the Microsoft Windows installer. If an error occurs during installation, all data is saved and stored, your favorite place on the HD space.
Now you can get rid of that information and set some MBS free.
Windows Installer Cleanup Utility is an application that lets you delete that data and free up your HD.
Download and install and save MBs and even GBs However, be careful when using it, if you do not take care, you can delete things you should not.
If you want to install a Microsoft Window installer on the first day, the Windows Installer Clive Utility will be really helpful.