I have a new Gateway DX430S desktop with Vista Home Premium and experienced
the exact same thing when trying to Back Up to my external hard drive. I have
been putting my system to 'Sleep'.

Re-Starting the system solved the problem - thanks Toonartist!

"Toonartist" wrote:
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> To anyone who is having the same problem, I fixed the error by simply
> restarting the computer (something I realized after I posted that I hadn't
> done since the default is just to put it into Sleep Mode).
>
> Anyways, I restarted and the error message went away and I was able to
> backup my system with no problems.
>
> "Toonartist" wrote:
>[color=green]
> > I backed-up my personal files (not a Complete System Backup) on my system
> > last week using Vista's backup program, a USB 2.0 connection and a Maxtor
> > 80GB portable hard drive. Everything got backed-up perfectly.
> >
> > This week when I went to backup again, I get the error message:
> >
> > "The backup did not complete successfully.
> >
> > A shadow copy could not be created for the following reasons:
> > The shadow copy provider had an unexpected error while trying to process the
> > specified operation. (0x8004230F)."
> >
> > Is there a solution for this? Should I wipe my backup drive and start again?
> > I have 4 USB ports on my laptop, does it matter if I plug into a different
> > port than last time (although it still reads it as the "F" drive).
> >
> > Btw, I'm running Windows Vista Home Premium on an HP Pavillion dv9000 laptop.
> >
> > If more info about my system is needed, please let me know.
> >
> > Any help would be appreciated.
> >
> > Thanks.
> >
> >[/color][/color]