Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: BSOD at random times - APC Index Mismatch

07 Mar 2012   #1

windows 7 64 bit home premium
BSOD at random times - APC Index Mismatch

I have been getting random BSOD's titled APC Index Mismatch. I can not attribute it to any specific activity. Please advise best route to correct this.

Thanks for the help!

Neil EricksonAttachment 201762

Attachment 201763

My System SpecsSystem Spec
08 Mar 2012   #2

Windows 7 Home Premium 64 Bit

Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [D:\Kingston\BSODDmpFiles\NLE9\Windows_NT6_BSOD_jcgriff2\030712-41153-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*c:\symbols*
Executable search path is: 
Windows 7 Kernel Version 7601 (Service Pack 1) MP (8 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 7601.17640.amd64fre.win7sp1_gdr.110622-1506
Machine Name:
Kernel base = 0xfffff800`03000000 PsLoadedModuleList = 0xfffff800`03245670
Debug session time: Wed Mar  7 00:10:10.396 2012 (UTC - 7:00)
System Uptime: 0 days 18:49:23.457
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck 1, {74852e09, 0, ffff, fffff88004871ca0}

Probably caused by : ntkrnlmp.exe ( nt!KiSystemServiceExit+245 )

Followup: MachineOwner

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

This is a kernel internal error. The most common reason to see this
bugcheck is when a filesystem or a driver has a mismatched number of
calls to disable and re-enable APCs. The key data item is the
Thread->KernelApcDisable field. A negative value indicates that a driver
has disabled APC calls without re-enabling them.  A positive value indicates
that the reverse is true. This check is made on exit from a system call.
Arg1: 0000000074852e09, address of system function (system call)
Arg2: 0000000000000000, Thread->ApcStateIndex << 8 | Previous ApcStateIndex
Arg3: 000000000000ffff, Thread->KernelApcDisable
Arg4: fffff88004871ca0, Previous KernelApcDisable

Debugging Details:

00000000`74852e09 ??              ???






LAST_CONTROL_TRANSFER:  from fffff8000307c1e9 to fffff8000307cc40

fffff880`04871a68 fffff800`0307c1e9 : 00000000`00000001 00000000`74852e09 00000000`00000000 00000000`0000ffff : nt!KeBugCheckEx
fffff880`04871a70 fffff800`0307c120 : 00000000`74852450 ef000000`89707867 00000000`c0000001 00000980`00000000 : nt!KiBugCheckDispatch+0x69
fffff880`04871bb0 00000000`74852e09 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceExit+0x245
00000000`07bcf0f8 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x74852e09


fffff800`0307c120 4883ec50        sub     rsp,50h


SYMBOL_NAME:  nt!KiSystemServiceExit+245

FOLLOWUP_NAME:  MachineOwner


IMAGE_NAME:  ntkrnlmp.exe


FAILURE_BUCKET_ID:  X64_0x1_SysCallNum_4_nt!KiSystemServiceExit+245

BUCKET_ID:  X64_0x1_SysCallNum_4_nt!KiSystemServiceExit+245

Followup: MachineOwner
Remove STOPzilla. It caused the latest crash and is questionable software. Actually, it caused all the crashes included in your reports.

If you are looking for similar software that will not cause problems on your system, I would recommend starting a thread in System Security - Windows 7 Forums after removing STOPzilla.
My System SpecsSystem Spec
09 Mar 2012   #3

windows 7 64 bit home premium
Thank you for your review

Thanks for the suggestion. I will remove it. I installed Stopzilla because of a fake AV that had totally taken control of my computer and even worked in Safe mode! Stopzilla would run prior to windows starting and was able to remove it as well as other things it found that improved the operation of my computer.

Too bad it is causing the BSOD.

Thanks for your help with this.
My System SpecsSystem Spec

09 Mar 2012   #4

Windows 7 Home Premium 64 Bit

You're welcome. I'm glad STOPzilla helped your computer in the past, but it is definitely hurting the performance now. Let us know how the system responds after removing STOPzilla.
My System SpecsSystem Spec

 BSOD at random times - APC Index Mismatch

Thread Tools

Similar help and support threads
Thread Forum
Before I begin, this is the last WhoCrashed summary report of my BSOD. The other four entries are exactly the same, except for the obvious differences of time and date: On Wed 3/19/2014 11:57:24 AM GMT your computer crashed crash dump file: C:\windows\Minidump\031914-33727-01.dmp uptime:...
BSOD Help and Support
APC Index Mismatch BSOD
I've never seen this before and it's only happened this morning but I also had at least one automatic restart (clean shutdown) that happened whilst I was browsing with IE10 and I don't think there was any good reason for it (i.e. no programs had autoupdated and triggered the restart). ...
BSOD Help and Support
BSOD crashes APC Index Mismatch
I just bought a new PC preloaded with vista and was upgraded to windows 7 in store. At first, I was experiencing numerous crashes while the computer was sleeping and also had trouble recovering from sleep mode. I disabled sleep mode and that "fixed" that problem. Then I started to experience BSODs...
BSOD Help and Support
BSoD Help: APC Index Mismatch
Hello, I'm new here, this is my first post as I'm at my wits end to why I keep getting a BSoD and how to solve it. I hope someone on here might be able to help me. I've not had it for a few weeks now but today it's done it around 5 times whenever I have tried moving photos from one folder...
BSOD Help and Support
APC Index mismatch HELP!!!
What a mess! I get this message while in Windows Live Mail. As of late my computer loads very slowly. From start up to going on line. Terribly slow. I did an upgrade from Vista. On a Dell laptop. I have Kaspersky, System Mech. pro and spyware doctor. All scans show nothing wrong. Did...
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 05:28.
Twitter Facebook Google+