BSOD after installing sound drivers

By brodie ยท 5 replies
Jun 10, 2011
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  1. The other day I ran chkdsk /r then wiped my computer and reinstalled Windows XP Pro. Everything has been working fine until today when I tried installing sound drivers (I went on the Realtek website and downloaded the AC'97 one) but halfway through installation, everything locks up and a blue screen appears with the following codes:

    0x0000007E (0xC0000005, 0xAFD1A46D, 0xF78DAA74, 0xF78DA770)

    *** portcls.sys - Address AFD1A46D base at AFD1A0CD DateStamp 48025ccc

    In the Event Viewer, it says:

    Error code 1000007e, parameter1 c0000005, parameter2 afd1a46d, parameter3 f78daa74, parameter4 f78da770.

    After it went to the BSOD the first time, I tried again with installing the drivers and the same thing happened. I zipped the minidump files (I hope I did it right), there were only two though.

    Anyone know how I can fix this?


    Attached Files:

  2. Route44

    Route44 TechSpot Ambassador Posts: 11,984   +72

    Both cite the Windows OS driver portcls.sys as the cause of your issue which is an OS driver that has to do with audio streaming function. However, in both dumps they cite the Realtec '97 driver alcxwdm.sys as not being able to load.

    The issue is really not with portcls.sys but with alcxwdm.sys. Is your system built by you and if so what is the make of your motherboard? If this system is bought is it a Dell, HP, etc.?
  3. brodie

    brodie TS Rookie Topic Starter Posts: 35

    Definitely not built by me, I have no clue what I'm doing with that kind of stuff. I bought it secondhand last year. It is a Dell Intel(R) Pentium 4 (no idea if that helps you at all).

    Is there anyway I can fix this alcxwdm.sys and have my sound drivers installed properly? You said it cites the Realtek drivers as not being able to load... is there a chance I'm trying to install the wrong ones or something?
  4. Route44

    Route44 TechSpot Ambassador Posts: 11,984   +72

    Go to Dell's website and find your exact model. Then update the very latest drivers that they have for your system.
  5. brodie

    brodie TS Rookie Topic Starter Posts: 35

    Okay, now I feel stupid. That was ridiculously easy and worked a charm ;) Thanks for your help!
  6. Route44

    Route44 TechSpot Ambassador Posts: 11,984   +72

    Naaa, no reason to feel that way. :) 99% of the time going through the manufacture is the correct way to do it whether it is a bought system or a built system which would then be the motherboard.

    Glad to be of help and really glad it is working out for you.

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