Cleaning junk,temp files in your sytem defintely ada a bit to system’s performance.
prefetch
Prefetch is a folder which is used to load application data into memory before it being demanded which improves the performance of applications and windows while loading.
Cleaning Prefetch folder once in a week will improve tthe performance of the system,Take a look how to clean the Prefetch folder.
Cleaning Prefetch folder In windows

  • Click Start menu click Run and type Prefetch

                    prefetch

  • Select ctrl+a to select all files and press shift +delete.

                 pr1