IBM/Lenovo Hotkey Brightness Issue/Setup

Issue:

• When pressing the Fn|(Home/End), the screen brightness increases or decreases by 2-4 points.
• I want the screen brightness to go up/down one point at a time

Solution:
Save the below in a file (screenbrightness.reg) then double-click on it to install it:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\monitor\Parameters]
"MinimumStepPercentage"=dword:00000001