Change the Default Location for Installing Programs

Windows uses the C:/Program Files directory as the default base directory into which new programs are installed.

However, you can change the default installation drive and/or directory by using a Registry hack. Run the(open run type regedit hit enter) Registry Editor and go to
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion
Look for the value named ProgramFilesDir. By default, the value will be C:/Program Files. Edit the value to any valid drive or folder

Windows will use that new location as the default installation directory for new programs.