Hi, I have notebook HP 655 (SN {Personal Information Removed}) with Windows XP SP3, NetFramework 3.5
My FN keys for changing intensity of backlight of screen not working. Any other FN keys are working correctly.
I have the nevest driver for AMD Radeon HD 7310 graphic card which is used in this laptop, I also tried HP Hotkey Support and HP Quick Launch Button - this software just add an information panel for changing volume of sound.
Microsoft Support said me that i have to contact HP support. I saw on some forums that many people have the same problem but no solved. And I also saw running win xp in the same laptop with win xp withouth problems.
Using Catalist software i can change brightness (it looks very bad) but no backlight intensity.
I'm helpless now. I tried everything. In windows 7 this functions worked correctly but this computer in not so good for using Win 7 or Win 8 (in win 8 these keys also not working) because is very slow. Please help me.
Backlight intensity is automaticly changing for example when I plug or unplug the charger. So just these keys not working. It's not a hardware problem it's a driver problem. I need to change the intensity for saving my battery and my eyes, because the intensity is on maximum with charger and in win xp is no possibility to change it without these keys. My friends have notebooks ACER, TOSHIBA, SONY with windows xp, they had the same problem but their company support send them a driver and the problem was solved. Please, HP, do the same for me.