Although registry changes were suggested in several internet tech help forums I've read, my current registry profile doesn't match the descriptions provided by those same forum support commentators (no such registry key). I've tried to correct and test the problem by switching USB ports, unplugging the USB mouse tab then rebooting, adjusting the mouse and checking all mouse settings via Windows' Settings-Devices-Mouse procedure, using Device Manager to update and roll back, and updating mouse and system drivers from the HP website (although I might look here and at the Synaptics website again). No problems were found via diagnostic runs. My mouse settings work perfectly during their activation period (if I turn on my system, then apply my preferred mouse wheel settings), but not at all if I reboot my laptop (i.e., if I turn my laptop off and then turn it on again later to resume usage, my mouse wheel resets itself from a four-line scroll limit to 78 lines per scroll, or drops down to a three-line limit -!). I've tried accomplishing this using the Windows 10 desktop setting page, and SPD's control panel. My objective is to maintain a four-line scroll limit.
My mouse scroll wheel settings keep reverting to their default (or their original) status per start up.
