You may want to change the location of your system default folder (C:\Program Files) from C drive to another system drives (D or E drive). By default software setup will attempt to install program in C:\Program Files directory. It is good practice to make the backup of the installed programs, if you installed all your programs in other than C drive. If you have little knowledge about editing windows registry then you can configure your computer for this purpose.
Follow the given steps to configure windows registry:
1. Click on Start button then type Regedit in Run option.
2.Here navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
3. In right side panel, double click on ProgramFileDir.
4. Now modify the value to any other drive (for example D:\Program Files).