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Cannot change the display brightness in Windows Mobility Center - Notebooks

For affected ThinkPad Systems, the display brightness slide bar in the Mobility Center is grayed out. For the affected 3000 Family notebooks, the display brightness slide bar in the Windows Mobility Center cannot actually change the brightness.

Affected configurations
Any of the following systems running Microsoft Windows Vista:
  • 3000 N100, V100, C200
  • ThinkPad G50
  • ThinkPad R50, R50P, R50e, R51, R51e, R52
  • ThinkPad T41, T41p, T42, T42p, T43, T43p
  • ThinkPad X31, X32, X40, X41, X41 Tablet
  • ThinkPad Z60m, Z60t

You can change the display brightness by pressing Fn+F10 and Fn+F11.

Additional information
This is the limitation of the affected systems.

  • Alias ID: MIGR-67183
  • Document ID: HT001934
  • Last Updated :17 Jun 2014
  • (c) 2014 Lenovo