Brightness Controls Stopped Working - dm4

[Rico4891]

The brightness control keys (f2 & f3) on my pavillion dm4 stopped working all of a sudden. I'm operating windows 7 64bit. I've tried reverting to previous system restore points. I've also installed the BIOS, Intel chipset, and graphics drivers. All the other function keys are working properly, just can't change the brightness. Right now it's stuck on the brightest setting.

I hope someone can point me in the right direction to solve this issue, I'm getting terrible eye strain from the screen.

Thanks

[DavidPK]

Hi,

Could you post back with the full Model No. or Part No. of your notebook.

In the meantime, open windows Control Panel and open Windows Mobility Centre.  You should find an option here to adjust the brightness.

Regards,

DP-K

[Rico4891]

DavidPK,

The full model is: Pavilion dm4 1165dx.

I went into Windows Mobility Center, there was no option for brightness control. The only options were: Volume, Battery Satus, Wireless Network, External Display, Sync Center, HP Wireless Assistant, Hard Drive Protection.

[DavidPK]

Hi,

Download and install the latest version of Quick Launch on the link below.

ftp://ftp.hp.com/pub/softpaq/sp51501-52000/sp51650.exe

After the installation has completed, restart the notebook and see if this has resolved the issue.

Regards,

DP-K

[Rico4891]

DP-K,

Did the quick launch install, still hasn't fixed the problem.

Rico

[G4geniuses]

I have the same problem on my hp pavilion dv6t. The f2 and f3 buttoms (brightness control) do not work anymore, have tried updating/reinstalling drivers.. updating bios... updating quicklaunch... hp said factory reset is last option... -_-

[DavidPK]

Hi,

Download this version of QLB and save it to your Desktop.

ftp://ftp.hp.com/pub/softpaq/sp50501-51000/sp50681.exe

Next, download and install Revo Uninstaller from the link below.

http://www.revouninstaller.com/download-freeware-version.php

Run revo and use it to uninstall Quick Launch Buttons.  Right click on the icon of the program you wish to remove and select Uninstall.  During the process you may be asked to delete registry entries, just select all and then click delete.  Do the same for any left over files and folders.  Once the uninstall has completed, reboot the PC.

If you don't have an extraction utility installed, download and install 7-Zip, then right click on the QLB installer on your Desktop, select 7-Zip, select Extract Files and click Ok.  Open the newly extracted folder, right click on Setup ( 14Kb ) and select 'Run as Administrator' to start the installation.  When complete, restart the notebook.

Regards,

DP-K

[Rico4891]

Hi DP-K,

That didn't work either. I'm feeling hopeless. Looks like a format is in sight...

Thanks for your assistance.

[DavidPK]

Hi,

From windows Control Panel, open Power Options, click on Change Plan Settings next to your selected power plan.  Do you see the option to Adjust Plan Brightness?

Look forward to hearing from you.

Regards,

DP-K

[G4geniuses · Accepted solution]

@Rico i found out how to fix it.. trial and error... go to device manager and click on your graphics driver.. and uninstall it... reboot computer... if you have win 7 it should install the updated grappics driver automaticly.. if not go back to device manager.. and go to the new device which isnt installed.. update it.. and restart computer.. then brightness controls will work.. sorry if i rushed through instructions..  reply back if you need more specific onees