Backup error

Whenever I try to run windows backup, it fails. I'm trying to backup files and a disk image from C: drive to an external HD. The errors it gives are listed below. Any clue why it's doing this and how it can be fixed?

Thanks!

Log Name: Application
Source: Windows Backup
Date: 1/27/2010 5:58:43 PM
Event ID: 4104
Task Category: None
Level: Error
Keywords: Classic
Description:
The backup was not successful. The error is: One of the backup files could not be created. (0x8078002A).
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Windows Backup" />
<EventID Qualifiers="0">4104</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2010-01-27T22:58:43.000000000Z" />
<EventRecordID>1855</EventRecordID>
<Channel>Application</Channel>
<Security />
</System>
<EventData>
<Data>One of the backup files could not be created. (0x8078002A)</Data>
<Binary>2A007880E30500003F0900005B090000420ED1665C2BEE174B64529CB14610EA71000000</Binary>
</EventData>
</Event>



Log Name: Application
Source: Microsoft-Windows-Backup
Date: 1/27/2010 5:58:41 PM
Event ID: 517
Task Category: None
Level: Error
Keywords:
Description:
The backup operation that started at '‎2010‎-‎01‎-‎27T22:55:52.388553200Z' has failed with following error code '2155348010' (One of the backup files could not be created.). Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Backup" Guid="{1DB28F2E-8F80-4027-8C5A-A11F7F10F62D}" />
<EventID>517</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2010-01-27T22:58:41.352450000Z" />
<EventRecordID>1854</EventRecordID>
<Correlation />
<Execution ProcessID="4004" ThreadID="356" />
<Channel>Application</Channel>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BackupTime">2010-01-27T22:55:52.388553200Z</Data>
<Data Name="ErrorCode">2155348010</Data>
<Data Name="ErrorMessage">%%2155348010</Data>
</EventData>
</Event>



Log Name: System
Source: VDS Basic Provider
Date: 1/27/2010 5:56:21 PM
Event ID: 1
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Description:
Unexpected failure. Error code: 490@01010004
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="VDS Basic Provider" />
<EventID Qualifiers="49664">1</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2010-01-27T22:56:21.000000000Z" />
<EventRecordID>6089</EventRecordID>
<Channel>System</Channel>
<Security />
</System>
<EventData>
<Data>490@01010004</Data>
</EventData>
</Event>

Has this backup 'ever' worked properly?

Try restarting your pc... Once you log back in, start the back up immediately and see if that works.

I have never had it work properly (I just installed Windows 7 a few weeks ago), and I have tried restarting and running backup with no success

What kind of external drive are you using? make / model?

Dear filups21,

Did you get a solution for the backup problem? I have the Samsung S2 also, and the same problem...

Many thanks

nope - never got a solution. Samsung's auto backup software doesn't work for me, either. I have to drag and drop to back things up, which takes a long time every time I want to back things up. It sucks, but I haven't had other problems with Windows 7.