Step1: Launch this FREE disk backup software: AOMEI Backupper and click on Backup at the left side of the main interface. Then choose System Backup button.
Step2: Click on the button marked in Step2 then specify a destination path for storing the system image. There are many options available in AOMEI Backupper for the destination path, such as the external hard drive, CD/DVD and NAS devices.
Step3: Click on Start Backup button in Step2. Then you will see the interface below which indicates that the system backup is in progress. You can find the system image in the destination folder once the backup process is over. Thus if the system crashes in the future, you can use this very image file to restore the system to state normal state.