Ø What backup utility are you using?
This could be Volume Shadow Copy service and SPP services are not started.
To restart the Volume Shadow Copy service and SPP services
You must be logged on as an administrator to perform these steps.
1. Open Administrative Tools by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Administrative Tools.
2. Double-click Services. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
3. If the SPP service is disabled, double-click it to open the service properties.
4. If Volume Shadow Copy service is double-click it to open the service properties
5. Click the Startup type list, click Automatic (Delayed Start), and then click Apply.
6. Under Service status, click Start.
Event logs are special files that record significant events on your computer, such as when a user logs on to the computer or when a program encounters an error. Whenever these types of events occur, Windows records the event in an event log that you can read by using Event Viewer
To view the Event :
Applications and Services Logs vary. They include separate logs about the programs that run on your computer, as well as more detailed logs that pertain to specific Windows services.
1. Open Event Viewer by clicking the Start button, clicking Control Panel, clicking System and Maintenance, clicking Administrative Tools, and then double-clicking Event Viewer. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
2. Click an event log in the left pane.
3. Double-click an event to view the details of the event and check for
red errors pertaining to Backups/VSS/SPP.
http://windows.microsoft.com/en-US/wind ... ent-ViewerFor more information on Backup follow the link below:
http://windows.microsoft.com/en-US/wind ... -questionshttp://windows.microsoft.com/en-US/wind ... your-files .
Hope this information is helpful.