Connect the mouse and then insert all the screws. Check the mouse wheel to ensure it is working. If it is working, place the pads on top of the screw holes and re-insert batteries. ... If that isn't working, try cleaning out the mouse wheel's chamber more.
Scroll Wheel is Stuck on Zoom - Many Windows users have contacted us with queries after becoming deeply annoyed that they're no longer able to scroll their computers. Each time they attempt using the scrolling feature the operating system zooms into the screen instead. It's reported to occur in a variety of programs such as native applications like File Explorer. This isn't a problem that is exclusive to a specific Windows version as it's known to be present across Windows 7, Windows 8.1 and Windows 10.
