Hi i am running vista home premium

I have Mirrored 500gig raid and using a 80gig sata drive to back up my music
docs ect. Recently i needed to change my back up sata due to tech probs. I am
now getting the error code 0x81000006 i cant turn off the the back up change
settings nor back up as it fails. I have tried a couple of forums were people
are having similar problems but with no success. I was hoping there would be
a sytem code or similar that could be accessed to reset the process allowing
me to continue to back up using vista many thanks Jonny