Satellite U840-10V - screen brightness problem

Hello
I own a U840-10V laptop and I have a little problem with my screen brightness from the first day I got it.
The fn keys work correctly. When I press the button Fn + F2 or F3 I see small panel brightness adjustment, but values 1,2,3,5,6 and 7 (except 4) seem to have the same level of brightness (the 4th is darker).

(I had problems with my backlit keyboard as well, but when I reset the defaults in the bios it worked perfect...)

so is that what someone knows how can I fix?

I reinstalled the PVAT to a newer version which was suitable for my laptop and windows7 - 64 bit, on the toshiba support site, but I haven't worked out.

so if anyone can help me I would love...

Thank you...

> I have a little problem with my screen brightness from the first day I got it.
Which is really strange.
It works correctly when you change the brightness level in the plan directly to settings?

Tags: Toshiba

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