Backup Not Successful (0x81000037) -Need a walk through to fix please

I've researched this to death and still don't have a clue what to change/fix.
Could use some expert help and walk through to narrow down the actual issue. Please advise.


Log Name: Application
Source: Windows Backup
Date: 11/3/2014 5:04:18 PM
Event ID: 4104
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Description:
The backup was not successful. The error is: Windows Backup failed while trying to read from the shadow copy on one of the volumes being backed up. Please check in the event logs for any relevant errors. (0x81000037).
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="2014-11-03T22:04:18.000000000Z" />
<EventRecordID>41470</EventRecordID>
<Channel>Application</Channel>
<Security />
</System>
<EventData>
<Data>Windows Backup failed while trying to read from the shadow copy on one of the volumes being backed up. Please check in the event logs for any relevant errors. (0x81000037)</Data>
<Binary>37000081E30500003F0900005B090000420ED1665C2BEE174B64529CB14610EA71000000</Binary>
</EventData>
</Event>




Fault bucket 1111713045, type 5
Event Name: WindowsBackupFailure
Response: Not available
Cab Id: 0
Problem signature:
P1: Backup
P2: 6.1.7601
P3: 0x81000037
P4: 7
P5:
P6:
P7:
P8:
P9:
P10:
Attached files:
C:\Windows\Logs\WindowsBackup\WindowsBackup.1.etl
These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportArchive\NonCritical_Backup_6b4db23a4df6c1b4bd79d40381c7a7 33c1c9036_0ce60e62
Analysis symbol:
Rechecking for solution: 0
Report Id: 5e381812-63a5-11e4-a9a0-4c72b9736899
Report Status: 0


I have tried Work Around Issue#2 and do not see the "mounted volumes" shown in the folder.
Windows backup or restore errors 0x80070001, 0x81000037, or 0x80070003

Thanks in advance for help.
Brian