Please keep in mind that all the drivers that we provide are generic drivers for the video controllers we designed.
However, each Original Equipment Manufacturer or motherboard manufacturer, can add, change or remove the features supported on their systems, and therefore they provide customized drivers to support such changes.
In this case, if you already tried the latest and previous generic drivers and updated the system BIOS and you still have the same behavior, you should check directly with your Original Equipment Manufacturer and use the drivers provided by them.
much thanks for your answer and you're absolutly right. Intel provides only generic drivers. Normally I would use the ones provided by the Original Equipment Manufacturer. Did I missed to tell, that Helwelt Packard canceld XP support in 2008? Sadly I found this on their Website, after I bought the Notebook .
So HP does not provide any XP driver. So my hope is, to find out, how to turn the Backlight on. At least, it was a hard way to find out which hardware is implemented and to find the correct drivers. And I'm finally through. Everything works fine, except the backlight. If I would get a hint, which Address to set or stuff, I would write me a script at startup to do the job....
...still happy with any hint,