Many time we forget to back up files because we may not like to run another program in the background for backing up data as this could reduce the speed of your computer. IdleBackup is a free Windows application which can back up your personal files and folders when the computer is idle. The best feature of this software is that it checks if the computer is idle for more than 1 min before starting the back up process.
You can select the files and folders which needs to be backed up and also the back up path. The location can be on the same hard drive, an external drive (memory card, USB drive), or another computer on the network.
Next you need to select the automatic backup option on the top right hand corner. Here set the countdown time for back up to start after the computer has been in idle state. The minimum time that can be set is 60 sec. You can also tell the software to check for any CPU activity before ensuring that the computer is idle.
IdleBackup is a simple to use and totally free software for backing up data.