solution of Win7 system mouse wheel up and down failure
1, right click on the computer, select "Management";
2, click on "Device Manager";
3, expand the "mouse and other pointing device";
4, in the following "Hid-compliant Mouse" right click, select "Uninstall", pop-up prompts click OK. Then restart the computer.
1, press the "Win+r" key combination to open the operation, input: regedit Click OK Open Registry Editor;
2, on the left side of the registry to expand: Hkey_current_user-control panel-dosktop;
3, on the right double-click Open "WheelScrollLines" item, its numerical data modified to "3" click OK to save;
Follow these steps to complete the setup and restart the computer. Users who need to be able to follow the above method settings, hope to help everyone.
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