It shouldn't be doing that though earlier versions of Home did cause the loss of a computer voice and the user had to reset it. The latest Home (2.56) seems to rectify that.
Anyway, do a pin reset on the unit. If that doesn't resolve the issue. Try the Clear flash tool found here. It's supposed to be useful when settings are not being retained on a unt; don't worry if it does not mention your model specifically.
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