windows 7 - Brightness slider not working

08
2014-07
  • user3461957

    I have installed Windows 8.1. I am unable to change brightness, I found the brightness slider in Windows mobility center but this simply does not work. I move the slider but brightness does not change. I am using Dell Inspiron 3521

    • Answers
  • Fazer87

    there are a couple of things you need to check with this particular model of laptop:

    1)Go into your BIOS settings, go to advanced > function key behaviour and check that function keys are set to multimedia. I know this controls the fn+F4/F5 behaviour, but I have just seen a couple of posts saying that this fixed it and the two are somehow linked?!

    2)Update drivers - Chipset, graphics, bios. Don't use the OEM drivers - from the dell website.

    3)Update drivers (again) - graphics - through control panel > device manager > graphics card > right click & update driver. This will search windows update for an up to date graphics driver with full 8.1 support.

    4)Change your computers power performance plan to "high performance". I've just seen a post on a forum saying that this was a problem and when the power plan changed, the controls came back to life.


    • Related Question

    dell - Webcam not working
  • Questioner

    I have a dell inspiron 1520 with a integrated web cam ,vista was the OS that came up with the system , i have moved to xp and have downloaded all the necessary driver for xp from the dell drivers download.....everything is working apart from the webcam...... i have downloaded the integrated webcam driver from dell download and installed it .... it was showing an error message not able to install .... i went to the device manager and when i checked i have seen a yellow question mark for the integrated webcam..... i uninstalled and installed the driver i have downloaded from dell.... the installation went fine and when i checked back in device manager i am seeing USB Composite Device and my webcam is still not functioning.

    Any suggestions whats going wrong... please help


    • Related Answers
  • Junior Mayhé

    Here's a link to the correct driver:

    Creative Labs Laptop Integrated Webcam

    However, you shouldn't need it. The webcam will be automatically detected by Windows XP and the generic driver works just fine.

    In case the webcam is turned off, you can enable it via Fn + F7

    The Fn key combinations may not be working without this:

    Dell QuickSet