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BSOD stop:0x0000007E sysaudio.sys

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stop:0x0000007E( 0xC0000005, 0xAA4796FE, 0xF78D6B28,0xF78DD624)
sysaudio.sys address AA82C6FE base at AA826000 Datestamp 57E276C3

BSOD shows up after login, disabling plug and play in msconfig stops BSOD but I have no sound. Other symptoms:
explorer.exe, when opened takes minutes to populate disk drives and files. Disk management won't open
Logical Disk Manager error: "The depencency service or group failed to start."

Appreciate any help, I've replaced sysaudio.sys. Problem showed up when I tried to reinstall WinTV which I have uninstalled along with Roxio 9. Problem persists.

Memory dump analysis follows:

Microsoft Windows Debugger Version 6.11.0001.404 X86
Copyright Microsoft Corporation. All rights reserved.

Loading Dump File [C:\MEMORY.DMP]
Kernel Summary Dump File: Only kernel address space is available

Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows XP Kernel Version 2600 (Service Pack 3) MP (2 procs) Free x86 compatible
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 2600.xpsp_sp3_gdr.090206-1234
Machine Name:
Kernel base = 0x804d7000 PsLoadedModuleList = 0x805634c0
Debug session time: Wed May 13 05:56:09.640 2009 (GMT-6)
System Uptime: 0 days 0:00:31.187
Loading Kernel Symbols
Loading User Symbols

Loading unloaded module list
* *
* Bugcheck Analysis *
* *

Use !analyze -v to get detailed debugging information.

BugCheck 7E, {c0000005, aa3116fe, f78d6b28, f78d6824}

Probably caused by : sysaudio.sys ( sysaudio!CLogicalFilterNode::CreateAll+81 )

Followup: MachineOwner

1: kd> !analyze -v
* *
* Bugcheck Analysis *
* *

This is a very common bugcheck. Usually the exception address pinpoints
the driver/function that caused the problem. Always note this address
as well as the link date of the driver/image that contains this address.
Arg1: c0000005, The exception code that was not handled
Arg2: aa3116fe, The address that the exception occurred at
Arg3: f78d6b28, Exception Record Address
Arg4: f78d6824, Context Record Address

Debugging Details:

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

aa3116fe f3a7 repe cmps dword ptr [esi],dword ptr es:[edi]

EXCEPTION_RECORD: f78d6b28 -- (.exr 0xfffffffff78d6b28)
ExceptionAddress: aa3116fe (sysaudio!CLogicalFilterNode::CreateAll+0x00000081)
ExceptionCode: c0000005 (Access violation)
ExceptionFlags: 00000000
NumberParameters: 2
Parameter[0]: 00000000
Parameter[1]: 00000020
Attempt to read from address 00000020

CONTEXT: f78d6824 -- (.cxr 0xfffffffff78d6824)
eax=00000000 ebx=e28728d8 ecx=00000004 edx=00000000 esi=00000020 edi=aa30cae4
eip=aa3116fe esp=f78d6bf0 ebp=f78d6c10 iopl=0 nv up ei pl zr na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010246
aa3116fe f3a7 repe cmps dword ptr [esi],dword ptr es:[edi]
Resetting default scope


ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".



READ_ADDRESS: 00000020

aa3116fe f3a7 repe cmps dword ptr [esi],dword ptr es:[edi]



LAST_CONTROL_TRANSFER: from aa312c53 to aa3116fe

f78d6c10 aa312c53 00000000 f78d6c8c 00000000 sysaudio!CLogicalFilterNode::CreateAll+0x81
f78d6c64 aa312a59 8975af90 00000000 e28cc760 sysaudio!CFilterNode::ProfileFilter+0x19c
f78d6d00 aa311a54 e28ba4a8 804e5638 89755f48 sysaudio!CFilterNode::Create+0x2d6
f78d6d3c aa312de5 e28ba4a8 00000000 f78d6d7c sysaudio!AddFilter+0xf2
f78d6d4c aa3110a6 e28ba4a8 00000000 897a5500 sysaudio!AddFilterWorker+0xf
f78d6d64 bad367ee 00000000 897a54e0 8056a5fc sysaudio!CQueueWorkListData::AsyncWorker+0x20
f78d6d7c 804e23b5 897a54e0 00000000 89ee9b30 ks!WorkerThread+0x45
f78d6dac 80575723 897a54e0 00000000 00000000 nt!ExpWorkerThread+0xef
f78d6ddc 804ec6d9 804e22f1 00000001 00000000 nt!PspSystemThreadStartup+0x34
00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16


SYMBOL_NAME: sysaudio!CLogicalFilterNode::CreateAll+81


MODULE_NAME: sysaudio

IMAGE_NAME: sysaudio.sys


STACK_COMMAND: .cxr 0xfffffffff78d6824 ; kb

FAILURE_BUCKET_ID: 0x7E_sysaudio!CLogicalFilterNode::CreateAll+81

BUCKET_ID: 0x7E_sysaudio!CLogicalFilterNode::CreateAll+81

Followup: MachineOwner
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