Acer Aspire 4520 – Fix Realtek HD Audio Install Failure

If you are having a hard time installing Realtek High Definition Audio device on Windows XP with Acer Aspire 4520 then this might help you to solve that problem. Below are the errors that can be solve when following this guide.

1. “Install Realtek HD Audio Driver Failure”, when trying to install the Realtek HD Audio driver.

2. “Unable to find appropriate device drivers” after installing the Realtek HD Audio driver from the Acer Aspire 4520 resource cd.

3. Can’t remove or update the Realtek HD Audio device from the device manager.

Based on my experience, the Realtek HD audio device driver which came from the Acer Aspire 4520 doesn’t work though the installation went fine, so you have to download this Realtek HD audio driver.

If you have previous installation of the Realtek HD Audio driver then uninstall it first.

4. Open control panel, then Add/Remove programs, click on Realtek High Definition Audio driver and click remove button.

5. After uninstalling the Realtek High Definition audio driver, Open the Device Manager and look for the Microsoft UAA Bus Driver for High Definition Audio, Disable it and then remove. You will not be able to remove this device if you will not going to disable it first.

device manager


6. Install the downloaded Realtek HD Audio driver then restart when ask to do so.

Thats all about it, you should have a working audio device after the reboot.

If you are looking for Acer Aspire 4520 Drivers for windows xp, you can download them here.

Batman has written 222 articles

88 thoughts on “Acer Aspire 4520 – Fix Realtek HD Audio Install Failure

  1. Saulo Pereira says:

    Problemas com o Realtek High Definition Audio no Windows XP para notebook Acer Aspire 4520.

    O procedimento a seguir funciona perfeitamente para solucionar o problema com o driver de audio Realtek para o Acer Aspire 4520. Resumindo os procedimentos:

    1-Entre em Painel de Controle, Adicionar ou Remover Programas. Remova o Realtek previamente instalado pelo CD de drivers.

    2-Entre em Painel de Controle, Sistema, Hardware, Gerenciador de Dispositivos. Clique duas vezes em Dispositivos de Sistema. Com o botão direito do mouse desative “Microsoft UAA Bus Driver for High Definition Audio”, e em seguida desinstale-o. Não basta desativar, é preciso desinstalar!

    3-Faça o download de algum lugar do driver correto, que é o WDM_R186.exe, e execute. Ele instalará corretamente o Realtek High Definition Audio no seu Windows XP. Reinicie quando for solicitado e pronto, seu áudio estará funcionando corretamente.

  2. Saud says:

    Hi,
    i too am having problems with the audio on acer 4520.
    I install the driver,no problems
    But it does not get listed on the Device Manager.
    And there is no audio.
    Also i donot see microsoft UAA Bus driver that u mentioned in my device manager.
    And when i unistall the driver i get message driver removal failure.
    Please help

  3. jig says:

    same here… any work arounds? i tried a number of audio drivers already… still none

  4. Batman says:

    go to control panel, add/remove programs and look for the realtek high definition audio driver and uninstall it, reboot your pc and then follow the instructions above.

    HTH

  5. baee says:

    dear friend,
    i m also having same problem at my 4920 notebook during installing audio driver,can i follow the same step as you give for 4520?do help me..pleasee!!!
    Thks n regards,

  6. Batman says:

    If it is Realtek HD Audio then you can simply follow this instruction, if not then im afraid you have to give me more details on the problem so i could at least help you.

  7. yvette co says:

    i don’t know how to remove microsoft UAA Bus Driver for Hight Definition Audio

  8. andrias melianus says:

    It’s works well.

    Thank you so much…

    I wish sometimes i can share my experiences. But, as you know, internet in Indonesia is still an expensive stuff. That’s slow me down to get newest info from internet.

    but thank you anyway

  9. yasin says:

    Hi..

    i have problem too with 4520, already uninstall realtek n restart, but not see microsoft UAA Bus driver that u mentioned in my device manager.

    please advice.. tq

  10. Batman says:

    Yasin,

    check the steps above and follow the guide, then reinstall your audio driver.

  11. azmi says:

    Thank you bro!!!!!…..finally….i’m very2 happy now…..i will treat you one day….

  12. sisira says:

    Thank you!fixed the problem in a jiffy after reading this.but one thing to be noted is that,this problem doesn’t happen in all versions of windows XP,and hence the problem is not with the driver provided.for instance,my laptop initially had a volume copy of XP,then i installed the driver and it worked fine.but yesterday i installed from another XP disk,but this copy showed the driver problem as you described.But,thanks to your solution,could fix it easily!

  13. nighthawk says:

    hey iv got an unusual audio problem 4 my acer 4520,i followed the above steps…but it didnt work….only sumtimes the realtek driver is detected and the sound comes…but wen i restart the laptop….the sound goes off again…i keep on uninstalling and reinstalling the driver over n over again and only sumtimes it works….pls sum1 help!!!!!!!!!!!!!!!!!!!

  14. wolfwood16 says:

    hi there,

    i think i would agree with sisira. I’m using XP Media Center Edition XP2 but and it’s not working. Followed the steps you’v provided but the sound card driver isn’t working over again everytime i restart the system though on luck it’ll work. The laptop beeps from the speaker everytime i would let it beep (For example, i’ll let it get an error msg). So i assume there’s no defects on my speaker nor on my sound card. But one thing is, for about a couple of years, i’m using the default driver from the CD Driver and i’d encountered this problem last 2 days ago when i installed Keyword Elite. Since it was a software and assume that it had cause sound drivers to malfunction. So i did a System Restore,but still no luck.

    Any last resort?

    Thank you in advance…

    ww16

  15. aan says:

    “hey iv got an unusual audio problem 4 my acer 4520,i followed the above steps…but it didnt work….only sumtimes the realtek driver is detected and the sound comes…but wen i restart the laptop….the sound goes off again…i keep on uninstalling and reinstalling the driver over n over again and only sumtimes it works….pls sum1 help!!!!!!!!!!!!!!!!!!!”

    i have a problem too… some body help me. if have a solution with my problem please send to my email de_fauzi@yahoo.co.id

    thanks…

  16. demi90 says:

    good info… thanks, this prob always occurs evrytime i reboot my 4520

  17. TLF179er says:

    I have the same problem with the audio that you need to restart it. what i did notice is when i check the audio properties, device selected is “bluetooth hands free audio” or something like it. when audio works, the device selected is “realtek hd audio”. i uninstalled widcomm bluetooth driver and its a hit and miss to get the audio, you restart the pc until audio shows up. please help us, Batman. thanks! and more power!

  18. Archangel chirwa says:

    Hello, I am running windows vista on aspire 4520 (acer), I have a problem with the sound. It all over a sudden lowered itself to zero as i was listening to music one of the days. Anybody aware of the solution to this problem? The current state now is that I am able to do all the configurations of the sounds but nothinhg comes out really! help help please!

  19. japs says:

    thanx man…great job…you helped me alot…2 thumbs up for you!…

  20. arga says:

    i wan to instal driver realtek audio acer 4520 but all driver i try can’t be comptible

  21. Alfredski says:

    DEAR FRIEND,

    Thank you very much for your help. I had the same problem on a Acer Aspire 5715Z. I got quit mad grrrrrrrr. Even the XP-driver on the site http://gd.panam.acer.com/home/ for the 5715Z wasn’t working.
    The driver you suggest did work immediately.
    You did a good job to help us out by the internet.

  22. Agustin says:

    Dear friends: I have an Acer Aspire 4520 and when I install the Bluetooth device it sais that there is no device found. I want the bluetooth so I can share the image from My cel to the Laptop. Any Idea on how to Fix the problem. Because it is driving me crazy I can´t use the BT and There is a buton to activate it but when I try it says that. (no device found).

    THKS

  23. Batman says:

    Agustin,

    your laptop doesn’t come with a bluetooth module installed, even though there is bluetooth button. you have to buy a bluetooth dongle if you want to connect your phone to your laptop via bluetooth.

    hope it helps.

  24. Agustin says:

    Thank you very much. I know preety much about computers. I´m from Argentina, yet I don´t know what is a dongle. Can u explain me??

    THKS

    PS: May be I can´t recognice the word dongle. Is it some kind of soft??

    thxs again

  25. TLF179er says:

    Hi Batman, I hope you can help me. I noticed you recommended BT from CDRKing. Are you local? I hope you can help, if we can meet up please? I am in Quezon City. Thanks

    I have the same problem with the audio that you need to restart it. what i did notice is when i check the audio properties, device selected is “bluetooth hands free audio” or something like it. when audio works, the device selected is “realtek hd audio”. i uninstalled widcomm bluetooth driver and its a hit and miss to get the audio, you restart the pc until audio shows up. please help us, Batman. thanks! and more power!

  26. Batman says:

    TLF179er,

    Try to download and install the latest driver from the link below

    ftp://WebUser:DAx7h9V@202.65.194.212/pc/audio/WDM_R229.zip

    Make sure to uninstall the Microsoft High Definition Audio patch first, you also need to uninstall your old realtek HD audio driver, and make sure to remove the Microsoft UAA Bus Driver for HD audio device (please refer to the above steps).

    Restart your computer and install above driver.

    I hope it works for you.

  27. Vanixen says:

    dude..
    my wireless adapter is gone..i didnt know where it dissapeared to..i even reinstall the driver, but it’s useless..please help…my laptop is Acer Aspire 4520..
    thankz..

  28. Ricky says:

    I’m using ACER Aspire 4920, i don’t know why all of a sudden the audio in my unit doesn’t function anymore…. i don’t have any idea to fix this problem…. somebody could assist me to fix this audio failure i really need it very badly for my upcoming business presentation…. thanks and more power….

  29. ms says:

    the beep that u get is the system speaker not the speaker for listening songs. the system speaker only beeps and is default on the mothertboard it is just for system sounds like errord and ram disorder beeps.so you still have to check you speakers

  30. steve says:

    hi tnx for this post i had the same problem, the solotion posted above solved it, tnx a lot, hope this can help more viewers

    i have another clarification when i am shutting down my pc, there are these messages that always pop up, DLL initializing faluire windows is shutting down, or failure to initialize, i tride the mscofig that some of my friends suggested but after 1 day messages appered agian, any help plz tnx,

  31. lyda says:

    hi, thanks for this post…but my queastion is: it necessary i uninstall the realtek ac’97 audio that already installed before? i have already uninstalled realtek high definition in add/remove program.

    plz help me
    thanks

    4. Open control panel, then Add/Remove programs, click on Realtek High Definition Audio driver and click remove button.

    5. After uninstalling the Realtek High Definition audio driver, Open the Device Manager and look for the Microsoft UAA Bus Driver for High Definition Audio, Disable it and then remove. You will not be able to remove this device if you will not going to disable it first.

  32. Mr Nick says:

    Hi, I tried all those before but still my audio isn’t working at all. Please help me by giving the solutions step by step. By the way, I scanned my PC with Everest Home Edition and it says that my motherboard is unknown but has a motherboard ID NL94510J86A.0025.2008.0107.1543

    BUS Type Intel GTL
    BUS Width 64-bit
    Real Clock 600 Mhz
    Effective Clock 600 Mhz
    Bandwidth 4800 MB/s

    I have Intel(R)Core(TM)2 Duo CPU
    E4600 @ 2.40Ghz
    2.39 Ghz, 0.99 GB of RAM

    Currently using Microsoft Windows XP Professional Version 2002 SP 3

    I did disable that and removed it under Add/Remove Programs, then installed the audio and my Genuine Intel Driver Installer says that my Audio Realtek is installed but still i can’t use or hear any sound from my speaker nor use programs that require audio devices. Thanks for reply ASAP.

  33. Vincent says:

    Just check error on drive C and restart.The audio will be enabled.But it will go on the next starting.Again if you want to enable audio repeat error checking.

  34. prakash joshi says:

    dude..
    my wireless adapter is not in function whenever i loggon with window xp, however the oranhe lightsturns on when i logg on to UBUNTU…i even reinstall the driver, but it’s useless..please help…my laptop is Acer Aspire 4520..
    thankz..

  35. dj mood says:

    if i had a big bag of gold i share a lot wit U.. tag.. U R THE problem solver thanks……

  36. sanji says:

    thanks a lot batman… u truly a hero of technology… thanks….

  37. LOL says:

    What if the headphone jack produces sound but not the speakers?

  38. Werner says:

    Thanks, a lot of hours I try to remove this problem. Impossible for me, until I find this perfect guide. Now it work. :_)

    thanks again

  39. Alex says:

    Hi, I’m having the same problem with my audio device, I have 4 partitions in my HDD (WinXP, WinXP64, Win7 32bits and Slackware 13(Linux)64bits) and in all my OS’s the sound device is not detected, some times works fine, but when I restart or shut down PC the device goes off again, I’m beginning to think it is a hardware problem, because when I run Slackware(linux) the system sends a message that says “The device was removed recently”, when actually the device is there.
    I’m starting to think about buying an external audio device!!!

  40. Arun kumar says:

    My Audio sound is not paying because of formatting of “c” drive. installation of sound driver massage showing “realtak audio driver failur. in device manager realtak audio device shows YELLOw dot, what is the problem ? help me.

  41. honey says:

    i also tied it and it didnt work on my acer4520 loptop… there is still no sound… please help

  42. harry says:

    you are such a legend, thanks..saved me while i am reformatting an important laptop !!!

  43. Peter says:

    Hi Batman

    I try to install the Realtek HD Audio Driver but was unsuccessful with the following message :

    “NO DRIVER SUPPORTED IN THIS DRIVER PACKAGE”

    Please help and advise what I should do next.

    Thanks

  44. Tom says:

    Problem was very bad on my Acer laptop with realtek sound system. I have found it is due to a timing issue. If I log in to windows desktop too quickly, before the drivers are fully loaded the computer does not detect the sound card. I have to wait until the log in password appears, and after there is no more hard disk activity THEN log in. Works no every time.

  45. ivan says:

    hey batman, i have the same problem with TLF179ER..
    in the master volume audio properties, the device selected is bluetooth handsfree audio,not realtek HD audio output. the realtek device is not detected in the device manager..

    sometimes when i booted my notebook,the realtek device is detected again, and the audio works fine..but now,even i restarted my laptop 10 times,the device cannot be detected anymore..

    i have tried to follow the instruction above, installed the WRM186 and WRM229 driver,but it still not work. well, a moment after reboot,the realtek device is detected..but only for a few second,and then it become undetected again..

    i also tried to manually add the realtek device by using add hardware in control panel. the device appear again,but the device status show “device cannot start (code 10)”..

    is this only simple driver failure or should i bring my laptop to acer service center? thx

  46. Jason says:

    Sound not detection on win-XP is not Driver related on ACER 4520…its problem of BIOS…..if the BIOS version is of V1.3XX then try to upgrade it to latest version…
    BIOS will some times detect the Audio hardware on motherboard chip irrespective of OS platform…It can be detected on Linux or Unix or on Win Xp or not being detected on any of OS.

    Try to bring back BIOS to its default settings by using tab F9 and see if problem persists or not.If it does not go away then its time for upgrade of BIOS.

    All the best.

  47. jason singh says:

    Hi all…. I have Acer 4520 with AMD 64×2 Dual core with XP and Linux,now after having it for over 3 years with out any single hardware faults i came to face with an strange problem regarding Audio on 4520.After restarting the laptop, sound hardware(realtek HD audio) gets undetected and i have no sound what so over on both OS but sometimes its gets detected and sound is back till laptop gets rebooted and damn goes off the system.Few times i got back sound while making default setting on BIOS and this problem comes back to hunt my laptop again as soon as system gets rebooted.Does any one have solution towards this as i suspect it to be an BIOS or Hardware problem.

    Thanks
    Jason Singh.

  48. rgonz says:

    Hi, I need help!!!!
    Acer Extensa 5230E
    No device drivers found when device manager is opened!!!!
    No audio driver is found and I have already downloaded the Realtek aduiodriver…. When I try to install the kb888111xpsp2, I receive a Setup Error Message, “Not enough storage is available to process this command”.
    When I click on the main setup icon, it goes through the process and restarts the computer, but still no sound…

    Also, my internet windows icon of signal bars is not present. There is just a generic icon.

    Thanks,
    rgonz

  49. Jose says:

    I have the same problem like Jason Singh. Sound will undetect again after restart. I’ve follow exactly the instruction above, but it’s not success.
    Anyone can help me please

  50. livin says:

    Hi,
    I have Acer Aspire 4520 with Win XP SP3 on it. My Graphics card went faulty and i replaced it,then my audio has problem now. When i try to install Realtek from CD it says “Hardware Failure” …..

    I have speakers working fine with good sound and all,but my internal mic and external slots of mike,headphone,speaker setup out is not working,also when i adjust volume control it doesnt change……

    please suggest an option….

  51. Clarebear says:

    I have an Acer Aspire 2920 and had a problem while installing the drivers provided on the website but I followed this advice (even though it’s for a different laptop) and my sound works fine now! THANK YOU SO MUCH! :)

  52. ikuto says:

    Hi,
    I have same problem with my 4520 here..
    but after restar.. windows found new hardware but not a sound device..
    it’s Agere System HDA Modem
    after install driver, there’s no more new device. I mean my sound device still not detected.

    I’m trying this step repeatedly but still no signs of sound device.

    please help me.. some gaming program can’t run if there’s no sound installed

  53. ikuto says:

    @Jason

    “..If it does not go away then its time for upgrade of BIOS.”

    how to upgrade bios? it’s using software or change the mainboard instead?

  54. JUAN JESUS says:

    hola sludos!!!!
    vueno hojala y les sirva mi informacion,
    tengo una acer aspire 4520
    y mi problema es este, estaba grabando en mi computadora,tenia conectado el microfono y los aurriculares,cuando termine desconecte los aurriculares y no paso nada
    pero cuando desconecte el microfono no se escucho, vueno si me pego la vosina al oido se oye pero muy despasio lo mas malo es que desde ese dia le conecto los aurriculares y no funcionan le conecto el microfono y igual no funciona,y el microfono que trae integrado tampoco funciona,le reinstale los divers no tube reultado,pence que window se abia dañado y lo cambie por otro window y tampoco tube resultado,
    le reinstale el bios y tampoco paso nada,
    quisiera que me dieran opciones si es posiblede, si no es de software que podria ser……
    podria ser la tarjeta de audio o la matherford o que podria ser???

    espero su respuesta gracias!!1

  55. FIRDAUS BIN SALLEH says:

    ur a genius…thank you so much!!!ur solution worked

  56. Winter says:

    3 Step Need only.

    1. Disable the Audio Icon that has an exclaimation mark first.
    2. Disable the Microsoft UAA Bus Driver under Syetem Device.
    3. Uninstall the Microsoft UAA Bus Driver.

    After that your PC will scan New Hardware and ask you to install from list or recommended install. Cancel it.

    Install your Realtek Sound Card driver by using the Setup.exe.

  57. Daorack says:

    I have Windows XP SP3. Could that be adding to the problem? Is there a way to fix it?

  58. Ten says:

    So any luck using external sound card?..coz i’m thinking of using it too..

  59. Ten says:

    My sister’s laptop got the same problem..at first it was on and off..on and off..till it completely gone..and even the dvd-rom is missing recently..I’ve try to fix it for months now..drivers..bios update..even opening the laptop’s body to check the hardware and trying to see if there’s anything wrong (Just looking..cleaning and knocked here and there actually.. haha)..nothing solve it..It has nothing to do with the Operating System..I’ve read across the web..some got the problem in xp some in vista, win 7 even Ubuntu..so I believe the problem is with the motherboard’s onboard audio device..fast and most expensive solution is to replace the motherboard…faster and cheaper solution..use an external sound card..check google about “External Sound Card”..

  60. Ashfaq Nazir says:

    Hi,
    i have a problems in my audio on acer 4520. I installed the Windown XP and also drivers. So, now there is no audio on my computer now. Also, i didn’t see the microsoft speaker icon on my desktop.
    Now, i am trying to download nVIDIA_nforce_15.24_xp32.zip, but it will took 30 hours.
    Please help

  61. Ashfaq Nazir says:

    Hi,
    i have a problems in my audio on acer 4520. I installed the Windown XP and also drivers. So, now there is no audio on my computer now. Also, i didn’t see the microsoft speaker icon on my desktop.
    Now, i am trying to download nVIDIA_nforce_15.24_xp32.zip, but it will took 30 hours.
    Please help

  62. mister k says:

    im using aspire 4520…my speaker is broken..there is no prblem at the device manager for the audio..so i used external speaker..but it’s seems nothing happened..still dont have sound…what should i do now?pls help me..

  63. wagner says:

    quero o driver de audio do not acer aspire 4520 urgente por vafor alguém me ajudaaaaaaaaaaaaaaaaaaaaaaa!!!!!!!!!!!!!!!!!!1

  64. piyush says:

    thanks bro…..your 5th trick comes in my way and solve my problem…thanx once again

  65. fs2com says:

    Hi all… I too had audio problem with aspire 4520 with windows 7…
    Audio is fine when fresh install win 7 then after a lot of windows update suddenly audio is missing (red exclamation on speaker icon taskbar) after searching around and try to find a solution here’s the step which i found to fix this problem :

    1. open device manager… you will notice that there’s no sound, video and game controllers (weird huh!) now open system devices
    2. locate High Definition Audio Controller… right click and disable it… then right click again and uninstall.
    3. Make sure you had internet connection right now… then hit scan for hardware changes button on toolbar
    4. Now the system will scan your new devices and will find 3 new devices (HD Audio controller, agere modem and Realtek Audio) but Realtek will have yellow exclamation mark which stated the driver can’t start… no worries!
    5. now head to control panel and uninstall program… what you had to do is uninstall Realtek driver… then restart
    6. After restart once again system will install new hardware… and after Voila… the speaker icon is back to normal and audio will be back

    Hopefully my fix can help you who face similar problem…
    Good luck to you all… :)

  66. peter says:

    thanks for all of your help. yours was the only link that did any good! many blessings to you.

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