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Toughbook cf-74 No Sound! Help!

Discussion in 'Hardware' started by pjcm26, Aug 20, 2014.

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  1. pjcm26

    pjcm26 Thread Starter

    Aug 20, 2014
    Hello everyone. I have Panasonic cf-74CCBAXBM. I have no sound since I have upgraded my OS to Windows 8 so I try Windows 7 dance edition. I can't hear anything from my laptop speaker nor I put on earphones/speaker.

    I tried uninstalling High Definition Audio Device trying to replace it by Realtel / Sigmatel and other drivers I can't remember but it always say, "it don't match my device". And the Windows kept on re-installing the HDA whenever I tried to reboot.

    So I started looking for other drivers in Device Manager to see what might have the problem. Under System device > system speaker > properties it says:

    Device Type: System Device
    Manufacturer: Standard System Devices
    Location: on Intel (R) 82801GBM (ICH7-M) LPC Interface Controller - 27B9

    Device Status: No driver installed in this device.

    That is what it also says on Programmable Interrupt Controller, System Timer, Intel (R) 82801 G (ICHM Family) SMBus Controller 27DA. I havn't check the other drivers but I think those are the problem. I tried to find them but I still have no luck. Please anyone help me.
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