Q: WmiMonitorBrightnessMethods - Not Supported in Windows 7 WmiMonitorBrightnessMethods is not supported in Windows 7. What could be possible reasons. I'm trying to use WmiSetBrightness to get and set brightness levels and values in c# application.

A: It could be simply that the PC doesn't support adjusting the brightness through software in the official way - for example, some laptops support it through the Mobility Centre, others only through proprietary software and others only through hardware keys.
If you're seeing the issue on some of a number of identical machines, make sure the graphics drivers are up to date.
