PC Hints and Tips To prevent damage to portable and notebook computers avoid harsh, jerky movements while the hard drive is running. This also applies - to a lesser degree - to desktops Keep your computer out of direct sunlight if possible. Security: keep all of your computer gear away from prying eyes. Keep it all away from the window to deter burglars. If your hard drive is over four years old pay particular attention to backing up your data. Life expectancy of drives made four years ago means that around 50% of them should have started to deteriorate To improve the efficiency of your hard disk there are a few things you can do. Deleting any files you don't need is useful (always back up your important files).