I tested all drivers above without success. Just missed update the motherboard BIOS (will do later).
The LG TV drivers page u gave me only has the firmware for it and not drivers for windows: (
Even so, I tried to update the firmware, but I've used the same version.
I believe that the TV drivers are wrong on windows because on Linux worked perfectly. I called LG and an attendant informed me that they do not have drivers for windows 7. Can I get a tutorial how to set this tv in Intel advanced mode control panel (custom resolution)?