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pwhe23 Level 1 Level 1 (0 points)
I am running Windows 7 on a new 11.6 MacBook Air and I just upgraded my Bootcamp to 3.2. Clicking the brightness buttons (fn + F1) causes the little brightness icon to come up and move up or down, but the actual screen brightness won't change and stays at 100%. I don't remember this happening before I upgraded (but the computer is brand new). How can I fix this.

MacBook Air 11.6, Windows 7
  • BryanBrannon Level 1 Level 1 (0 points)
    Same setup and issues here. Anyone can help?
  • csutoras Level 1 Level 1 (0 points)
    This problem has just started for me as well. It was working fine but as of about 2 days ago the brightness buttons just do not change the brightness anymore. I am stuck in 100% bright and ***** for working on it at night.

    Same situation as others. Macbook Air with Basecamp and Windows 7.
  • MBAhelp2 Level 1 Level 1 (0 points)
    I'm having this problem too. Incredibly annoying issue. If this isn't worthy of an immediate Bootcamp update, I don't know what is.
  • thwap Level 1 Level 1 (0 points)
    Gah, ME TOO!! grr. What IS this problem.

    Suddenly I can't change the brightness, neither with the F1 and F2 keys, nor with the slide bar in bootcamp control panel.

    Granted I have modified quite a few things like installing trackpad++ and power plan assistant, which do hook into the bootcamp control panel for their operation. But I still don't think they would be the cause.

    I have MBA 13" Oct 2010 model.
  • ReMacs Level 2 Level 2 (295 points)
    On Mac Pro 3.1, Windows 7 with mac alu. keybd., F1 and F2 do nothing. F1 & F2 with fn bring up help.

    The only way I've found to reduce glare of display is to rightclick desktop->
    AdvancedSettings->ColorManagementTab->ColourManagementButton->
    Advanced->CalibrateDisplay Button->Next{can you believe this??}->Next->Next->Next And in Adjust Gamma, drag the setting to bottom.

    If you have ATI Catalyst driver, this can be done more simply therein. If you have a fancy display such as LG W2753, display settings are variable via exec downlowd from supplier site.
  • ckahn Level 1 Level 1 (0 points)
    Same issue, but with 2011 MacBook Pro 17"

    Brightness slider under "Control Panel\All Control Panel Items\Power Options" has no effect either. Tried uninstalling and reinstalling Boot Camp from included DVD. Version 3.2 is the only version that can be installed on this model.
  • ckahn Level 1 Level 1 (0 points)
    Here's a screencast of the Windows Screen brightness slider running in parallel with the Apple brightness icon while pushing F1 and F2. Although both are sliding in parallel, the screen brightness remains unchanged.

    http://www.screencast.com/t/ay8p9IShW

    Maybe I'll try a fresh install of Windows as a test.
  • ckahn Level 1 Level 1 (0 points)
    Did a fresh install of Windows 7. Couldn't find the brightness control.

    Followed that with installation of Boot Camp 3.2. Found the brightness control and it was the same: sliding it around had no effect, F1 & F2 keys had no effect -- just the brightness icon as in the video link posted earlier.

    Is there anything else I should try before I blow away this fresh install? Should I try installing the 66 important updates? (206.7 MB)

    Message was edited by: ckahn
  • ckahn Level 1 Level 1 (0 points)
    Did another fresh Windows 7 install -- this time x86 instead of x64.

    Brightness control works.

    Now what?
  • ckahn Level 1 Level 1 (0 points)
    At some point yesterday the brightness control stopped working on this 32-bit Windows 7 install. System Restore won't bring me back far enough to restore brightness control. I suppose I could uninstall updates one-by-one until it starts working again.

    http://www.quora.com/When-is-the-next-Boot-Camp-Software-Update-for-Windows-64-b it-expected-to-be-released
  • ckahn Level 1 Level 1 (0 points)
    This is tedious. Is there an automated way to do this? Will this even work?

    1. uninstall an update
    2. test the brightness
    3. go back to step 1.

    Now rebooting after uninstalling KB975560...

    Message was edited by: ckahn
  • ckahn Level 1 Level 1 (0 points)
    I've uninstalled all Windows updates installed yesterday except for kb976902 and a silverlight update -- neither of which seem to be uninstall-able. Brightness control still don't work. Ugh.
  • zacaropolis Level 1 Level 1 (0 points)
    I've got the same problem on my 2011 15" MBP. Just installed Win7 x64 w/SP1 and can't adjust the brightness.

    The brightness control on my 2009 MBP works perfectly on Win7 x86, at the same patch level.

    I would hate to have to run x86 and waste all the extra RAM in this computer.
  • thatguy09 Level 1 Level 1 (0 points)
    Same here, Win 7 x64 on MBP 2011 15". Brightness worked after first boot, then after Windows Updates, stopped. Keyboard and volume controls still work.
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