If nothing else works, try this : [HKEY_CURRENT_USER\Control Panel\Mouse] "ActiveWindowTracking"=dword:00000000 "DoubleClickHeight"="4" "DoubleClickSpeed"="500" "DoubleClickWidth"="4" "MouseSensitivity"="12" "MouseSpeed"="1" "MouseThreshold1"="6" "SmoothMouseXCurve"=hex:00,00,00,00,00,00,00,00,15,6e,00,00,00,00,00,00,00,40,\ 01,00,00,00,00,00,29,dc,03,00,00,00,00,00,00,00,28,00,00,00,00,00 "SmoothMouseYCurve"=hex:00,00,00,00,00,00,00,00,b8,5e,01,00,00,00,00,00,cd,4c,\ 05,00,00,00,00,00,cd,4c,18,00,00,00,00,00,00,00,38,02,00,00,00,00 "MouseThreshold2"="10" "SnapToDefaultButton"="0" "SwapMouseButtons"="0" "MouseTrails"="0"