Pavillion scrolling probs

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I have an old HP Pavillion n5210 laptop with the touch screen mouse.
Question is it has a center button amongst three on the bottom. The middle
one I presume is a scrolling key. I can't get it to scroll the pages up or
down. I googled looking for drivers, software ect.,,, to no avail. Does
anyone have info on this please? Thanks in advance

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