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

    Feb 6, 2009

    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.

    A driver is causing an inconsistent power state.
    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

    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,
    Last edited: Feb 6, 2009
  2. Rmuffler

    Rmuffler Former Eset Moderator

    Jun 26, 2008
    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,
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