really weird sound problem..

Discussion in 'DIY Computers' started by graham, Jan 13, 2006.

  1. graham

    graham Guest

    A friend of mine was complaining that his sound no longer came from the
    speakers, and the graphics looks awful.
    He's got a emachines 420, and so he decided to use a recovery disc to
    repair the problems. I soon found out he used the wrong recovery disc,
    -he thought that you could use any recovery disc to complete the task.
    So, I bought a emachines 420 recovery disc, and popped the disc in,
    thinking that when it was finished all was going to be well. After the
    disc did it's recovery, i checked via device manager, that every piece
    of hardware was recognised, and had no problems. great, i thought,
    there's no apparent problems, the USB drivers were in place, the VGA
    drivers were all there, and the sound drivers showed no conflicts at all.
    I checked the sound- but there was none, although device manager showed
    nothing wrong! The correct drivers were put in, everything looked fine,
    but try as i might, i just could not get the sound to work!!
    I've gotten over the problem, by installing a cheap sound card (
    Mercury) and that produces sound fine, but I'm puzzled to know why,
    doesn't the original sound card ( built on the motherboard) doesn't work
    now? Did the bogus recovery disc, that he thought was fine, corrupt
    anything? I checked that every thing went back in via the proper
    recovery disc,( sound, VGA, USB, chipset, LAN ) but i cannot for the
    life of me could get the sound to work!
    Weird!
    Graham
     
    graham, Jan 13, 2006
    #1
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  2. graham

    Fishman > Guest

    It happens when XP accepts and installs an incompatable sound driver.

    I've often has instances where Windows Update suggests a driver update for
    the sound system.
    The recommended update is downloaded and installed ok but then all sound is
    lost.

    Remedy:
    Roll back driver to previous one that worked
    Hide the update that didn't work (so you dont forget and install it again
    later)

    It's possible that the recovery CD you used had several sound drivers on it
    and XP picked the wrong one.
     
    Fishman >, Jan 13, 2006
    #2
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  3. graham

    Rob Hemmings Guest

    It could be that the onboard sound hardware simply died - perhaps
    a voltage spike down the speaker lead (dodgy earthing on the amplifier
    could do that) or through the line-in, if it's used. I'd try Fishman's
    idea
    and make sure you have the correct (and latest) drivers and install them
    directly from Device Manager.
    HTH
     
    Rob Hemmings, Jan 13, 2006
    #3
  4. graham

    graham Guest

    I tried searching for updated drivers, but no luck, like you say, it
    could be a spike in the speaker lead, it's impossible to tell... Would
    putting in the wrong lead, say the microphone cause this problem? I'm
    not too bothered, nor is my friend, it's just a mystery as to why it
    happened at all...
    Graham
     
    graham, Jan 13, 2006
    #4
  5. graham

    3T39 Guest

    Hello, graham!
    You wrote on Fri, 13 Jan 2006 18:43:14 GMT:
    It's almost certainly the wrong driver. You can fix it, but you need to make
    sure you get the correct driver first. The best way is open the machine and
    look at the audio chip (its very small so you will need a magnifier and a
    light, you will most likely find the chip near the back edge roughly in line
    with the first pci slot, it's typically around 7mm square with around a
    dozen pins on each of the four sides. (of course this isn't always going to
    be the case but it's Nearly always right) read the main numbers on the top
    of the chip and enter them as written into google, if the makers name is
    there go to their site for the drivers but driver guide is useful for most
    of them. google should be able to at least confirm that you are looking at
    an audio processor. Once you have the right drivers go to device manager and
    update drivers using the right one.




    With best regards, 3T39. E-mail:
     
    3T39, Jan 14, 2006
    #5
  6. graham

    3T39 Guest

    Hello, graham!
    You wrote on Fri, 13 Jan 2006 08:03:59 GMT:



    Don't forget to double check that the plug is in the right socket, don't
    laugh, you would be suprised to learn how many people plug the speaker into
    the mic socket. It's an easy mistake to make. and if by chance you find this
    to be the case please tell us, we won't laugh, ... honest.





    With best regards, 3T39. E-mail:
     
    3T39, Jan 14, 2006
    #6
  7. graham

    Fishman > Guest

    Plugging the speakers into the sound card's microphone socket is a real
    bonus.
    Well at least the socket is on the right interface card :)

    Several of my customers have plugged their speakers into one of the two
    sockets on a PCI V/F/D 56K dial up modem and wondered why the sound isn't
    working!
     
    Fishman >, Jan 14, 2006
    #7
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