Block Level Backup Engine Service
Windows 7 Service Details
The Block Level Backup Engine isused by the Backup and Restore Center in the Control Panel. It allows for backups to occur at the hard disk level, instead of just file by file. Disk imaging essentially. If you do not use backup, then this service will probably never run, so setting it from manual to disabled is probably a moot point.
The WBENGINE service is used by Windows Backup to perform backup and recovery operations. If this service is stopped by a user, it may cause the currently running backup or recovery to fail.
Consequences of Stopping:
Disabling this service may disable backup and recovery operations using Windows Backup on this computer
All services listed in 'Required For' will be unable to function