Some programs which are installed in your computer might not be useful to you. And not only that these programs are not useful to you but these also slows down Windows 7. If some programs are partially useful to you and are startup programs, then you should remove them from startup using msconfig.You can find which all programs are slowing down your Windows 7 and remove them. For doing it, just follow the instructions given below.
1. Open ‘Control Panel’.
2. Double-click ‘System maintenance’.
3. Open ‘performance and tools’ and in the left pane click ‘Advanced tools’.
Now, a list of programs that slow down your Vista will be shown.