HT1338 buzzing noise when i adjust my brightness?

Is there an easy solution to fix the noise from my brightness adjustment?

Hello TommyJon,
Welcome to the HP Forums! I hope you enjoy your stay!
I understand that a buzzing sound is produced when the "W" key is pressed. This is normally a hardware failure, and I would contact HP support for assistance.
You can utilize this website to learn how to contact HP appropriately, based on your region: Contact HP Worldwide
Please let me know if you have any other questions or concerns. Thanks for choosing the HP Forums. Have a great day!
Mario
I worked on behalf of HP.

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                iStat Results
CPU               24%-45% User
                      5%-10% System
FAN               5630rpm Exaust
BATTERY      Health 84%
MEMORY      1gb Wired 2.18gb Active
TEMPS          HD- 35deg
                     CPU- 91deg
                     Enc Base 1, 2, 3: 30deg
                     Heatsink B- 51deg
                     Mem Bank A1- 47deg
                     Mem Module A1- 54deg
BROWSER    Opera
VERSION      10.7.5
MODEL         Pro, Late 2011, 13"

Unwanted noise when adjusting screen brightness

Are there any other new iMac (iSight) owners out there experiencing unwanted noise when adjusting their screen brightness to any setting other than maximum? Dimming my screen causes a loud buzzing sound similar to feedback you get with bad grounding.

Dyummy,
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I am still inclined to believe this is a driver/software issue with the nVidia 256MB card or the display. If your screen replacement helps, let us know.
Thanks,
JLC

HT1338 buzzing noise when i adjust my brightness?

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