Jerry, its your BIOS that tells the PWM when to turn the backlight off or on.
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[image|274638|align=left]
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[image|274638|align=center]
Try to flash or update your BIOS. Check [http://www.dell.com/support/troubleshooting/us/en/04/KCS/KcsArticles/ArticleView?c=us&l=en&s=bsd&docid=DSN_60F1B26CE2611EF2E040AE0AB8E14C46|on here] for a BIOS update and how to do it. Hope this helps, good luck.
Jerry, its your BIOS that tells the PWM when to turn the backlight off or on.
[image|274638|align=left]
Try to flash or update your BIOS. Check [http://www.dell.com/support/troubleshooting/us/en/04/KCS/KcsArticles/ArticleView?c=us&l=en&s=bsd&docid=DSN_60F1B26CE2611EF2E040AE0AB8E14C46|on here] for a BIOS update and how to do it. Hope this helps, good luck.