Step for Disk defragmenter of your computer1. Uninstall any programs you do not use or need. It is best to uninstall programs prior to a defragmentation as the newly acquired free space will generally be located all over the hard drive thereby giving rise to fragmentation.2. Make sure that all unnecessary programs are closed.3. Cancel any programs that are scheduled to runIf you have not manually scheduled any programs to run then skip this step.4. Delete any temporary filesThis is done by running Disk Cleanup. To run the program, go to START- Run, and enter cleanmgr in the window.5. Run the Disk Defragmenter Program. Go to START â€“ Run and enter dfrg.msc in the window. Make sure that your desired drive is selected [C: being the default drive], and click on the Defragment button.6. Sit back and relax as your computer organizes your fragmented files.