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Sorry, there was a problem. Please try again later.The 7640 lay out looks different.THe power on button isn't a button you push.Hp 7640 has a touch screen to power on.7640 vs 5740.740 has everything you see on the 7640.Power button has changed on the latest model.Old memories usually have a different look.The on screen lay out is set up different to walk you through to pick out your options.
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