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mak

Cannot adjust screen brightness

I tried to google a way to this problem, but no success. The problem is I cannot adjust my screen brightness at all, the screen brightness is at its full no matter what. I've tried everything, Fn + up/down arrow doesn't work, going into the Vista power settings doesn't work...Nothing. I desperately need a fix to this problem because due to this I'm out of battery in under an hour.

P.S.: This problem occurred after installing a fresh copy of Windows Vista, I downloaded all the drivers and software's from dell support page.

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6 replies
wallynyc

Does the Function key (Fn) work with any other function, like FN and F8 to toggle the screen from Internal->External_->Int&Ext ?
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mak

yea, fn + f8 works to toggle the screen.
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wallynyc

I've done a quick search and found that someone else seems to have the same problem with a m1300 fitted with LED backlight - forum.pcstats.com­/showthread.php­?t­=68195

I am using a m1330 at work (typing on it now) which does not have the LED backlight option and it works fine for brightness adjustment - both Fn keys and Power settings. And I've installed Vista on it from scratch recently too. So maybe it has something to do with the LED backlight option?

From this point, I'm lost, sorry..... I hope you find the answer!
David
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wallynyc

Hmmm..... Someone else having the same problem running Fedora (Linux) on a m1330 - forums.fedoraforum.org­/showthread.php­?t­=224438

Seems like something to do with an O/S driver that doesn't link in with the m1330's hardware properly? Maybe a BIOS setting or version issue?
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mak

I've already tried playing with the BIOS settings--to no avail. I'll reinstall the video driver and see if it works...
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humedini

Have you re-installed from the Dell website or from the original DVD that came with the laptop? Might be a conflict of versions so try the DVD and see how you get on?
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