BSOD every 30-45 Min: BAD POOL HEADER

[SchakalNo1]

A Friend of mine asked me for PC help and I did not find the issue.

Whenever he starts his PC (win 8), between 30 and 45 minutes afterwards it crashes with BSOD and the info "BAD POOL HEADER". BlueScreenView revieled that ntoskrnl.exe is always involved, sometimes some .sys-files, but more times than not only ntoskrnl.

Since I had no chance to physically inspect the PC, bad memory could be a reason but inside windows the PC crashes before memtest is able to complete and running a bootable memtest solution is not possible on this pc (locked bios).

Here are the logs: View attachment 67902

Any hints would be appreciated.

 

[lifetec]

All dumpfiles i have checked are

   *******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck 19, {21, ffffe0017a453000, 3200, ffffffffffffffff}

*** WARNING: Unable to verify timestamp for ngvss.sys
*** ERROR: Module load completed but symbols could not be loaded for ngvss.sys
Probably caused by : ngvss.sys ( ngvss+11f6b )
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT

PROCESS_NAME:  ngtool.exe

CURRENT_IRQL:  0

ANALYSIS_VERSION: 6.3.9600.17336 (debuggers(dbg).150226-1500) x86fre

LAST_CONTROL_TRANSFER:  from fffff8012adfecc1 to fffff8012adce3a0

STACK_TEXT:  
ffffd000`2144c4b8 fffff801`2adfecc1 : 00000000`00000019 00000000`00000021 ffffe001`7a453000 00000000`00003200 : nt!KeBugCheckEx
ffffd000`2144c4c0 fffff801`2af1d72c : ffffe001`7a453000 ffffd000`2144c598 00000000`00000000 fffff801`00000000 : nt! ?? ::FNODOBFM::`string'+0x20401
ffffd000`2144c560 fffff801`dce57f6b : ffffe001`83000014 ffffd000`2144c991 00000000`00000000 00000001`00000000 : nt!ExFreePoolWithTag+0x72c
ffffd000`2144c650 ffffe001`83000014 : ffffd000`2144c991 00000000`00000000 00000001`00000000 ffffd000`2144c730 : ngvss+0x11f6b
ffffd000`2144c658 ffffd000`2144c991 : 00000000`00000000 00000001`00000000 ffffd000`2144c730 ffffe001`83000000 : 0xffffe001`83000014
ffffd000`2144c660 00000000`00000000 : 00000001`00000000 ffffd000`2144c730 ffffe001`83000000 ffffe001`001f0062 : 0xffffd000`2144c991

ngvss.sys Fri Jul 10 09:57:20 2015
Driver Description: Avast! driver

Driver Update Site: Support : Avast Software

This driver is part of Avast, the installation might be corrupted.
Uninstall it with the Avast Remover/Uninstall Tool and reinstall.
If this does not stop the BSOD remove it and use a other Security suite.

And update or remove this driver from 2007.
ISODrv64 Sat Nov 03 04:21:18 2007
Driver Description: ISO CD-ROM Device Driver - ISODrive

Driver Update Site: Create a MultiBoot CD, an ISO image file or a virtual CD - download FREE evaluation copies of our software!

 

[SchakalNo1]

Thanks @lifetec, I did this yesterday evening, no crashes till now (did not get to use the PC much though). If it stays strong until tomorrow evening I will mark as solved.