The microsoft geeks has given you a great option called "auto save" in excel. Actually this is a very powerful tool for you. Normally the spread sheet saves by itself for each and every ten minutes. But in less than ten minutes a lot can happen. You have a option to adjust this frequency. Let see how can we make this happen.But keep in mind that anything can happen to your computer or the network that you are connected. It will be better if you have copy of these files in a removable media like CD, flash drive or an external hard disk.
1.A drop down menu will will open, there click on the Save tab in the drop down menu.
2.after this click the Save Auto-recovery check box and hit enter the required time in the settings field.
3. Now your on the safer side. Hit the OK button and finish the task successfully.