Dell Dimension C521 not saving changes to Setup??

  Oh Gee 21:39 25 Mar 13
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Dell Dimension C521 - Battery changed on mother board by following instructions in manual. Then switch on, go into Setup and make changes to mirror what I recorded before removing old battery, then when clicking Save Changes and Exit Setup, no changes are saved! Any ideas please?

  Fruit Bat /\0/\ 22:31 25 Mar 13

How do you know the (F10) save changes were not saved?

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