We have to run the backup manually in order to complete the backup task.
The following is the command used to run the auto backup :-
C:\WINDOWS\system32\ntbackup.exe backup "@C:\Documents and
Settings\Administrator\Local Settings\Application Data\Microsoft\Windows
NT\NTBackup\data\Daily Full Backup.bks" /um /v:yes /r:yes /rs:no /hc:on /m
normal /j "System State" /l:s /p "4mm DDS"