I get a BSOD by Epfwndis.sys on Vista

Discussion in 'ESET Smart Security' started by ukmats, Feb 6, 2009.

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  1. ukmats

    ukmats Registered Member

    Joined:
    Feb 6, 2009
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    Hey,

    I have had problems with my Vista BSOD'ing on me for a while now. I ran windbg and finally managed to figure out that it's Epfwndis.sys that's causing it. I search this forum but wasn't able to find any solution to this issue even though a number of people seems to have similar issues.

    The only thing that I can think of is that I installed a VPN client from Cisco before the crashes started, even though I cannot guarantee that it has anything to do with this.


    The two main issues I have are that

    1/ When the computer returns from sleep the WIFI doesn't work. The Vista completely refuses to recognize any WIFI card and also doesn't start the Network control panel.

    2/ When the computer tries to sleep without being connected to the mains it BSOD's. From what I've gathered on forums it's because of the DRIVER_POWER_STATE_FAILURE and a driver that fails to start sleeping.

    One more thing is that when I try to restart the computer after the WIFI stops working it BSOD's as well due to the epfwndis.sys.


    Keeping up with everyone else I paste selected parts from the minidump.

    DRIVER_POWER_STATE_FAILURE (9f)
    A driver is causing an inconsistent power state.
    Arguments:
    Arg1: 00000003, A device object has been blocking an Irp for too long a time
    Arg2: 85355b10, Physical Device Object of the stack
    Arg3: 881eb030, Functional Device Object of the stack
    Arg4: 8769ce00, The blocked IRP

    And here's the callstack

    STACK_TEXT:
    8210cacc 8204ab5c 0000009f 00000003 85355b10 nt!KeBugCheckEx+0x1e
    8210cb28 8204a6ac 8210cba0 82125500 82125400 nt!PopCheckIrpWatchdog+0x1ad
    8210cb68 820cdc40 821254e0 00000000 9308a490 nt!PopCheckForIdleness+0x343
    8210cc88 820cd800 8210ccd0 8b5ddb02 8210ccd8 nt!KiTimerListExpire+0x367
    8210cce8 820cd3c3 00000000 00000000 00c5ac5a nt!KiTimerExpiration+0x22a
    8210cd50 820cbedd 00000000 0000000e 00000000 nt!KiRetireDpcList+0xba
    8210cd54 00000000 0000000e 00000000 00000000 nt!KiIdleLoop+0x49

    Grateful for prompt answers,
    Mats
     
    Last edited: Feb 6, 2009
  2. Rmuffler

    Rmuffler Former Eset Moderator

    Joined:
    Jun 26, 2008
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    Location:
    San Diego, CA USA
    Hello ukmats,

    Uninstall the VPN software to see if the BSODs continue. What version of ESS are you running?

    Thank you,
    Richard
     
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