Hi, thanks for reply and sorry for the delay. Yes I changed the Display to a non Lenovo FRU AUO, Display brightness is only adjustable under Linux. I may also plan to change the Wifi Card. I tried to patch it myself but last time it didnt work (maybe cause of a bad clamp or the bad software under windows), but I was able to patch the original bios dump back. Afterwards I didnt touch that laptop for a while thats why I just checked with a newly installed windows again, no brightness adjustment possible -.-.