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Reversed brightness keys, and screen is too dim. What could it be?
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I have a weird problem with a Toshibe Satellite M105 S3031 laptop, the brightness buttons have been reversed: the combination that should bring the brightness up (Fn + F7) decreases the brightness one step every 2 key presses, and the one that should lower it (Fn + F6) incresases it one step every 2 key presses.
The real problem (since I could tolerate the keys working backwards) is that the screen, at the highest achievable brightness is too dim for using in a well lit room.
The problem seems to be hardware related, since it fails this way even at system POST.
There are few times when everything works ok (with a brighter screen), and stay that way until the system is restarted.
I´ve already trying flashing the latest bios available, but nothing changed.
Does anyone have any idea how could I fix this?
EDIT: typos
Edited by: iRobot ( ) , sancheztavo ( )
Have you tried an external monitor to make sure that your GPU is okay? right now it sounds like your backlight is out. That could be cause by a bad inverter, CCFL, cable or bad LCD.
oldturkey03,
The GPU is OK, s there anything else I could do to get a better diagnostic?
sancheztavo,
How did you test the GPU? Did you check with an external monitor?
oldturkey03,