Windows 7: Data Backup completes with error

After converting from Windows Vista Home Premium to Windows 7 Home Premium on two HP desktops with Intel Viiv" software, I have experienced backup issues caused by the conversion creating a User titled IUSR_NMPR. This user does not appear under the list of users in control panel, but it does exist under the folder Users. Here is the text of the error report from the backup process error log.

Backup encountered a problem while backing up file C:\Users\IUSR_NMPR\AppData\LocalLow. ErrorThe system cannot find the file specified. (0x80070002))
Backup encountered a problem while backing up file C:\Users\IUSR_NMPR\Contacts. ErrorThe system cannot find the file specified. (0x80070002))
Backup encountered a problem while backing up file C:\Users\IUSR_NMPR\Searches. ErrorThe system cannot find the file specified. (0x80070002))

I have tried deleting this user name from the folder but it gets recreated. I found the following in a Vista Forum:

RE: What is IUSR_NMPR
I don't have it on mine, but at
http://www.eggheadcafe.com/software/...-accounts.aspx
the following information was given:

delete user accounts - Ronnie Vernon MVP
10-Aug-07 02:00:42

Bill

I did some research on what you are seeing.

The user "IUSR_NMPR" seems to be associated with a process entitled
mediaserver.exe that uses this account when it is running. This has
something to do with Media Center or possibly the Intel Viiv" software and
is used to download media content from the internet. This looks legitimate
and this is all I could find.


So it seems the only option is to uncheck IUSR_NMPR from the default backup settings.