macbook pro 13" 2010 backlight fail on windows 7 when connecting battery

[kim dante]

after installing windows 7 a couple months ago, everything was fine, until yesterday, i found that on windows 7 once i disconnect the power cable the backlight stops ( the screen goes black) but on mac OS everything is fine and i can run it on battery alone.

 

[maflynn]

Could it be a driver issue? Did you install or reinstall the bootcamp drivers?

 

[NZed]

after installing windows 7 a couple months ago, everything was fine, until yesterday, i found that on windows 7 once i disconnect the power cable the backlight stops ( the screen goes black) but on mac OS everything is fine and i can run it on battery alone.

Have you updated driver?