1- From the Windows Control Panel, go to System and Security / Administrative Tools / Services.
a. If you have access to the Windows Run… Command, you may also type Services.msc in the Run… Box and click OK. This will take you directly to the Windows Services management console.
2- Locate the Windows Backup service. Right-click the service, and select Properties.
3- The properties for the Windows Backup service opens. Stop the service by clicking the Stop button.
4- From the Startup Type drop-down list, select Disabled. Click OK to save your changes and close the service properties window.
5- Back to the Windows Services management console, make sure that the Windows Backup service Status is blank (stopped) and that its Startup Type is set to Disabled
With the Windows Backup service disabled, if you attempt to access the Windows Backup and Restore tool, you will get a blank window, which is normal. The Windows Backup and Restore tool is now completely disabled and can no longer be used.