One of the first things to do when setting up a new computer or upgrading an old one is to create a backup of your company files. This is done by creating a copy of all of the company file data at a specific moment. A backup is important because if anything should happen to your data, such as corruption or hardware failure, you will be able to restore it from this last saved version. If you don't know how to backup quickbooks desktop application. Me and my technical team are 24/7 available for your assistance.