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Windows 7: BC Code 1a,50 BSOD

23 Jul 2010   #11

Win 8 Release candidate 8400

Quote   Quote: Originally Posted by taarno View Post
Hi Guys.

Thanks again for your replies.

Both of those drivers as far as i can gather belonged to Gigabyte Easy Tunes. I was not using easy tunes so i have removed it from my machine. Since then it looks like i still have the same problem i have attached the latest dump file hoping you guys can shed some light on it.

This one is pretty straight forward. Cause your video driver. You also have some older drivers that need updating. You need to remove all traces of the current driver (there is a removal tool) before downloading and installing a new one.


Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\K\Desktop\072310-25662-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*C:\symbols*;srv*e:\symbols
Executable search path is: 
Windows 7 Kernel Version 7600 MP (2 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 7600.16539.amd64fre.win7_gdr.100226-1909
Machine Name:
Kernel base = 0xfffff800`02c16000 PsLoadedModuleList = 0xfffff800`02e53e50
Debug session time: Fri Jul 23 06:29:50.270 2010 (GMT-4)
System Uptime: 0 days 1:25:05.924
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck 50, {ffff848000000014, 0, fffff8800416fb4d, 7}

Could not read faulting driver name
Probably caused by : dxgmms1.sys ( dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+b9 )

Followup: MachineOwner

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

Invalid system memory was referenced.  This cannot be protected by try-except,
it must be protected by a Probe.  Typically the address is just plain bad or it
is pointing at freed memory.
Arg1: ffff848000000014, memory referenced.
Arg2: 0000000000000000, value 0 = read operation, 1 = write operation.
Arg3: fffff8800416fb4d, If non-zero, the instruction address which referenced the bad memory
Arg4: 0000000000000007, (reserved)

Debugging Details:

Could not read faulting driver name

READ_ADDRESS: GetPointerFromAddress: unable to read from fffff80002ebe0e0

fffff880`0416fb4d 488b08          mov     rcx,qword ptr [rax]







TRAP_FRAME:  fffff88002ebb780 -- (.trap 0xfffff88002ebb780)
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=ffff848000000014 rbx=0000000000000000 rcx=0000000000000000
rdx=fffff8a0010c08b0 rsi=0000000000000000 rdi=0000000000000000
rip=fffff8800416fb4d rsp=fffff88002ebb910 rbp=fffff8a0010c08b0
 r8=0000000000000000  r9=fffffa8001a47a10 r10=fffffa8004f20000
r11=0000000000000002 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0         nv up ei pl nz na pe nc
fffff880`0416fb4d 488b08          mov     rcx,qword ptr [rax] ds:00c0:ffff8480`00000014=????????????????
Resetting default scope

LAST_CONTROL_TRANSFER:  from fffff80002d05789 to fffff80002c86600

fffff880`02ebb618 fffff800`02d05789 : 00000000`00000050 ffff8480`00000014 00000000`00000000 fffff880`02ebb780 : nt!KeBugCheckEx
fffff880`02ebb620 fffff800`02c846ee : 00000000`00000000 00000000`c0000001 00000000`00000000 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x40e4b
fffff880`02ebb780 fffff880`0416fb4d : fffffa80`04f21750 00000000`00000000 00000000`00000000 fffffa80`04e2b7a0 : nt!KiPageFault+0x16e
fffff880`02ebb910 fffff880`0418a65d : 00000000`00000000 fffff8a0`010c08b0 fffffa80`00000000 fffffa80`01a47a10 : dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+0xb9
fffff880`02ebbae0 fffff880`0418a398 : fffff800`00b96080 fffff880`04189d00 fffffa80`00000000 fffffa80`00000000 : dxgmms1!VidSchiSubmitRenderCommand+0x241
fffff880`02ebbcd0 fffff880`04189e96 : 00000000`00000000 fffffa80`05add390 00000000`00000080 fffffa80`04e2b010 : dxgmms1!VidSchiSubmitQueueCommand+0x50
fffff880`02ebbd00 fffff800`02f2ba86 : 00000000`03485ca0 fffffa80`04f158c0 fffffa80`018489e0 fffffa80`04f158c0 : dxgmms1!VidSchiWorkerThread+0xd6
fffff880`02ebbd40 fffff800`02c64b06 : fffff800`02e00e80 fffffa80`04f158c0 fffff800`02e0ec40 00000000`00000000 : nt!PspSystemThreadStartup+0x5a
fffff880`02ebbd80 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KxStartSystemThread+0x16


fffff880`0416fb4d 488b08          mov     rcx,qword ptr [rax]


SYMBOL_NAME:  dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+b9

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: dxgmms1

IMAGE_NAME:  dxgmms1.sys


FAILURE_BUCKET_ID:  X64_0x50_dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+b9

BUCKET_ID:  X64_0x50_dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+b9

Followup: MachineOwner

Old drivers
hardlock.sys        fffff880`06f11000    fffff880`06f5dc00    0x0004cc00    0x456f10e7    11/30/2006 13:12:07                        
ElbyCDIO.sys        fffff880`034ce000    fffff880`034d5000    0x00007000    0x457f3278    12/12/2006 18:51:36                        
aksdf.sys        fffff880`06f01000    fffff880`06f10e00    0x0000fe00    0x458033cc    12/13/2006 13:09:32                        
ElbyCDFL.sys        fffff880`0457b000    fffff880`04589000    0x0000e000    0x4581c093    12/14/2006 17:22:27                        
spldr.sys        fffff880`016d5000    fffff880`016dd000    0x00008000    0x4a0858bb    5/11/2009 12:56:27                        
GEARAspiWDM.sys        fffff880`04589000    fffff880`04596000    0x0000d000    0x4a1151c0    5/18/2009 08:17:04                        
amdxata.sys        fffff880`00ec1000    fffff880`00ecc000    0x0000b000    0x4a12f2eb    5/19/2009 13:56:59

My System SpecsSystem Spec
23 Jul 2010   #12

Windows 7 Professional x64

Please remove any CD virtualization programs such as Daemon Tools and Alcohol 120%. They use a driver, found in your dmp, sptd.sys, that is notorious for causing BSODs. Use this SPTD uninstaller when you're done: DuplexSecure - Downloads

I see you have the February version of your video card drivers. Please update them using the widget at the bottom of this post.

...Summary of the Dumps:

Built by: 7600.16539.amd64fre.win7_gdr.100226-1909
Debug session time: Fri Jul 23 06:29:50.270 2010 (UTC - 4:00)
System Uptime: 0 days 1:25:05.924
BugCheck 50, {ffff848000000014, 0, fffff8800416fb4d, 7}
Probably caused by : dxgmms1.sys ( dxgmms1!VIDMM_GLOBAL::PrepareDmaBuffer+b9 )
My System SpecsSystem Spec
23 Jul 2010   #13

Widows 7 64bit 7600

Thanks for quick replies guys.
Firstly to Ken can you point me in the direction of the removal tool your referring to. And to Jonathan after reading many of the other posts with similar probs. ie Nvidia cards unistalled the drivers i had downloaded from nvidia site and let Windows install its own driver. still crashes.
My System SpecsSystem Spec

23 Jul 2010   #14

Windows 7 Professional x64

Here is a removal tool: Guru3D - Driver Sweeper

Be sure to install the latest July version of the nVidia drivers. Windows is not finding the most recent ones.
My System SpecsSystem Spec

 BC Code 1a,50 BSOD

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