T440 display brightness does not

After that the first time I put my piece of crap T440 for sleeping, the keys on the keyboard to change the brightness of the screen stop working - no effect, & not on the screen display. Given generally terrible all of the features of this machine, I'm not too surprised. I downloaded & installed the power management program, the pm, the driver display driver and a box of chocolates. Anyone have any ideas?

Known issue of Windows 7: https://support.microsoft.com/kb/2752407

Tags: ThinkPad Notebooks

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