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Fixing nc8540p EliteBook: headphone jack problem in Windows 7

This post is about how to fix sound problem in nc8540p EliteBook laptop with Windows 7 Pro (x64) . Just recently, I’ve had a problem with my headphone jacks. When I plug in my headphones, the sound still comes out of the laptop speakers, but no sound comes out of the headphones.
Doing some search in the internet I have got a solution (in my case it works) – IDT audio driver has to be installed instead Microsoft’s one.
1. Download IDT High-Definition (HD) Audio Driver from HP site here.

2. Install it and restart computer.

3. enjoy

screen shots.

1. Speaker Properties in Windows 7 (headphone jack doesn’t work)

2.Speaker Properties in Windows 7 (headphone jack works properly)


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  1. adrien
    December 16th, 2012 at 06:57 | #1

    It worked for me! thanks.
    on Elitebook 8540p.

  2. damariswhatley
    September 6th, 2013 at 19:08 | #2

    This unit relieves hardness and muscle tremors. To choose
    from are many practices because can be used to help you rectify back pain.

  3. Shawn Michael Flynn
    July 17th, 2015 at 04:47 | #3

    i thought the headphone jack was bad but it was the Driver. I downloaded and installed the IDT High-Definition (HD) Audio Driver and now the headphone jack works on my HP Elitebook 8540p

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