Satellite C850 - 1-5 - problem with function keys

Good evening

Since a few days, I noticed on my laptop that I could not do more as before, which is the volume with the button located at the top of the keyboard (F9 - F10) or the brightness. On the square, it's functions F1, F2, F3 etc. who went. I have already tried using parameters and setting key 'special functions' systems, but that worked again, then in "mode F1 - F12", still nothing and I challenged 'special functions', but again without success.

How to solve this problem, please?

Can you please tell us what model of laptop do you have?

Tags: Toshiba

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