I have a Toshiba Tecra 8100 laptop machine. I installed Win XP Pro. And everything seemed OK. It has now started to cause the display too dim down at random intervals. The only recovery is to cycle ?function+F5? through a full cycle, 4 strokes with a delay between them.
This key combination is listed as changing the display thru internal TFT, external monitor, and external TV. I have shut down all the power save and screen saver options to no effect. Any ideas on how to cure this???