Invalid Page Fault In Nonpaged Area

I'm looking for some help in diagnosing a fault on a Dell Dimension 8300.
I am experiencing intermittent BSOD;

Results from Dumpchk:
----- 32 bit Kernel Mini Dump Analysis

MajorVersion        0000000f
MinorVersion        00000a28
DirectoryTableBase  1a30f000
PfnDataBase         81a93000
PsLoadedModuleList  805644a0
PsActiveProcessHead 8056a558
MachineImageType    0000014c
NumberProcessors    00000002
BugCheckCode        10000050
BugCheckParameter1  e4854000
BugCheckParameter2  00000000
BugCheckParameter3  804fd665
BugCheckParameter4  00000001
PaeEnabled          00000000
KdDebuggerDataBlock 805542e0
MiniDumpFields      00000dff

ServicePackBuild      00000200
SizeOfDump            00010000
ValidOffset           0000fffc
ContextOffset         00000320
ExceptionOffset       000007d0
MmOffset              00001068
UnloadedDriversOffset 000010a0
PrcbOffset            00001878
ProcessOffset         000024c8
ThreadOffset          00002728
CallStackOffset       00002980
SizeOfCallStack       000006f4
DriverListOffset      00003308
DriverCount           0000009d
StringPoolOffset      000061a8
StringPoolSize        000015d0
BrokenDriverOffset    00000000
TriageOptions         00000041
TopOfStack            efb9f90c
DebuggerDataOffset    00003078
DebuggerDataSize      00000290
DataBlocksOffset      00007778
DataBlocksCount       00000003

Windows XP Kernel Version 2600 (Service Pack 2) MP (2 procs) Free x86 compatible

Kernel base = 0x804d7000 PsLoadedModuleList = 0x805644a0
Debug session time: Fri Apr 08 20:02:03 2005
System Uptime: 0 days 10:13:26
start    end        module name
804d7000 80701000   nt             Checksum: 0021C534  Timestamp: Wed Aug 04 07:
18:18 2004 (41107FAA)

Unloaded modules:
ebb41000 ebb6b000   kmixer.sys    Timestamp: unavailable (00000000)
f7ba7000 f7ba9000   splitter.sys    Timestamp: unavailable (00000000)
ebb41000 ebb6b000   kmixer.sys    Timestamp: unavailable (00000000)
ef6c2000 ef6c4000   splitter.sys    Timestamp: unavailable (00000000)
ecba8000 ecbd2000   kmixer.sys    Timestamp: unavailable (00000000)
ef668000 ef66a000   splitter.sys    Timestamp: unavailable (00000000)
ef6e8000 ef6ea000   splitter.sys    Timestamp: unavailable (00000000)
ef6f6000 ef6f8000   splitter.sys    Timestamp: unavailable (00000000)
f13b3000 f13dd000   kmixer.sys    Timestamp: unavailable (00000000)
f7b91000 f7b93000   splitter.sys    Timestamp: unavailable (00000000)
f7c17000 f7c18000   drmkaud.sys    Timestamp: unavailable (00000000)
f285c000 f2869000   DMusic.sys    Timestamp: unavailable (00000000)
f13dd000 f1400000   aec.sys     Timestamp: unavailable (00000000)
f26f4000 f2702000   swmidi.sys    Timestamp: unavailable (00000000)
f7ba5000 f7ba7000   splitter.sys    Timestamp: unavailable (00000000)
f7891000 f789a000   processr.sys    Timestamp: unavailable (00000000)
f7881000 f788c000   p3.sys      Timestamp: unavailable (00000000)
f62f3000 f62f7000   kbdhid.sys    Timestamp: unavailable (00000000)
f7959000 f795e000   Cdaudio.SYS    Timestamp: unavailable (00000000)
f62ff000 f6302000   Sfloppy.SYS    Timestamp: unavailable (00000000)

Finished dump check


Results from Eventvwr:

The computer has rebooted from a bugcheck.  The bugcheck was: 0x10000050 (0xe4854000, 0x00000000, 0x804fd665, 0x00000001). A dump was saved in: C:\WINDOWS\Minidump\Mini040805-01.dmp.


I've run memtest86 on the system overnight and 36 full tests completed without any errors... so i'm swaying towards a software fault...

Can anyone point me in the right direction??


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Memtest86 is pretty good, but it's not as good as swapping good RAM in.

If you really think the hardware is ok, then you should investigate system drivers.  The dump you provided seems to list "nt" as the faulty module name.  What were you doing when the blue screen happened?
bomskiAuthor Commented:
i was rendering some animation via Swift3D V4.... however, i have noticed that Norton Antivirus seemed to crash the system when it tried to perform a system scan...
How much memory do you have?  Rendering tends to eat it up pretty quick, and Norton is getting more bloated with every new release.  If you disable Norton, does the problem repeat itself?
bomskiAuthor Commented:
Apologies for not getting back for a day or two...
My system has 1Gb of EEC DDR RAM...

After trying to eliminate possibilities, i eventually was able to duplicate the BSOD error; turns out it was Norton Internet Security 2005!
I uninstalled NIS 2005 and found about a 15% performance increase; from the error i can only assume that Norton placed a corrupt file in the pagefile and upon accessing this rogue file, caused the system to halt. Numerous attempts to reinstall NIS 2005 failed, they resulted in system halts and serious degradation in performance.
I chose the option to re-image the system (purely out of frustration!) and all appears well...

Any suggestions for an alternative to NIS?

For a software firewall, ZoneAlarm is considered pretty good:,fid,7228,00.asp

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