For manual instructions refer to this link:
Backup your Avalanche 5.3 instance by opening the Task Scheduler > clicking Add > select System Backup > click Next
Give it a name > click Next
Select when you want to perform the task and click Next
Open the Task Scheduler > Click Add > Select System Restore > Click Next
Select to Restore the most recent system backup, Restore by path or Restore Selected to get to the proper backup you want to restore. Click Next.
Your restore will begin immediately. You will be unable to login until the restore has completed.