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Jonathan Copone
Jonathan Copone Posted on Jul 23, 2008
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Unknown device on the device list

I have an Acer Aspire 4520, AND the os is WIN XP. when I check the device manager there is an unknown device on the list. Under properties for this device it gives the following as the device instance id (ACPI\WEC1023\4&36128FA&0) Does anyone know what this is ?Does it have something to do with having no sound?

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  • 6 more comments 
  • Jonathan Copone
    Jonathan Copone Jul 24, 2008

    I searched the list of drivers , but, there is no utility drivers. the notebook was originally vista. the only utility drivers for it are the vista os. i installed the entire list , still no sound

  • Jonathan Copone
    Jonathan Copone Jul 24, 2008

    I ve tried that now the unknown has become the the realtek AC'97
    audio. but it won't load any of the drivers I have found

  • Jonathan Copone
    Jonathan Copone Jul 26, 2008

    yes Itried that one , doesnt work. I fi buce. 1394ound the unknown devs enumerator . now I have no yellow question mark in any of the categories. I have tried to manually install the drivers, still no sound . the audio properties dialog box show bluetooth stereo etc. but i still get no sound

  • Jonathan Copone
    Jonathan Copone Jul 27, 2008

    yes I checked the settings. and the sound card is on the motherboard. it is begining to look like the sound circuit has failed

  • Anonymous Sep 08, 2008

    ACPI\WEC1023\4&36128FA&0

  • Anonymous Sep 19, 2008

    please help- unknown device yellow marked-ACPI\WEC 1023

    how can we get the driver...machine now with XP/SP2

  • Anonymous Oct 25, 2008

    i have the same

  • kmdcomputer Nov 27, 2008

    I downgraded my Acer Aspire 4520G notebook from Windows Vista to Windows XP. And now I am facing problems with the following device drivers. Can anyone help me? Thanks in advance.

    1. Ethernet Controller Driver (NVIDIA nForce Network Adapter Driver)
    2. ACPI\WEC1023\4&36128FA&0

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  • Posted on Oct 06, 2009
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Update the unknown device driver using CIR or card reader driver or reinstall the card reader and CIR drivers.
or Try flash your bios with version 3632 bios for XP(recommended)...

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  • Posted on Oct 27, 2008
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Download all windows xp driver from :

http://www.drivercabinet.com/driver-acer-aspire-4520-windows-xp/

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  • Posted on Jul 23, 2008
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Unknown devices usually have to do with a utility driver. Download all utility drivers for your machine at Acer's support site and this should take care of it. When you hit the right driver it will find and tell you exactly what the unknown device is.

  • 1 more comment 
  • Anonymous Jul 24, 2008

    Sorry , missed the no sound. I've had a few Acers come through my shop that we took out Vista and put in XP. I had to find the make and model of the sound card, and go to the manufacturer's site to get the sound drivers. Search driverguide.com for the sound driver. First search by the model of your machine, then, if you can't find it, search by the make and model of the sound card. If the unknown device is still there after you find the sound driver, then it may be some little feature that's use with Vista. If the machine works properly, don't worry about it.

  • Anonymous Jul 24, 2008

    Have you tried this driver?



    http://www.download.com/Realtek-AC-97-WD...

  • Anonymous Jul 26, 2008

    Have you checked the sound setting? Make sure that they are set for the laptop speakers. If you've done this also, then I'm going to say that this is a hardware problem with the speakers. You might check the connections to see if they've worked loose.

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