Dimming problem - Satellite A660-18

I have the above system running Windows 7. A problem arose when using the Fn + F6/F7 keys (dimming / brightening). The dimming key now lights up the screen and the intensity knob varies now it. The functions work in reverse. I could live with that, but what is really annoying is that when the screen is left idle, the screen lights up - (normally the computer would be light to save energy, but this computer it cleared up after a period of inactivity.) What would control this function? It's happened before and I don't know how to fixed it himself, but he did. I don't want just that he continue to occur. (reboot does nothing). Thank you

Post edited by: bswee365

Have you noticed this behavior from the first day?
Have you installed something that can influence this strange behavior?
Are you using the original operating system preinstalled you got with your laptop?
Other changes?

I put t think this will help but try to reinstall Toshiba value added package.

Tags: Toshiba

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