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Windows 7: Blue screen while switching users

31 Aug 2010   #1

Windows 7 Ultimate x64
Blue screen while switching users


I bought an new pc and since the beginning I've been having blue screen errors during installation of software and while I switch between users. These are the details of the pc:

- Windows 7 Ultimate
- x64
- Full retail version
- Brand new installation
- PC is one month old
- I've installed Windows various times, but I keep getting the same problem.

Thank you for the help.

My System SpecsSystem Spec
31 Aug 2010   #2
Capt.Jack Sparrow

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit

Hello and Welcome !

Seems like both the Dump files are pointing to Memory. I would recommend Run a Hardware Diagnostic (Memory and Hard Drive) follow this link for instructions Hardware Diagnostic !! « Captain Debugger

Update the following Driver

Rt64win7.sys Thu Feb 26 14:34:13 2009

*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

    # Any other values for parameter 1 must be individually examined.
Arg1: 0000000000041790, The subtype of the bugcheck.
Arg2: fffffa8000fa07d0
Arg3: 000000000000ffff
Arg4: 0000000000000000

Debugging Details:

BUGCHECK_STR:  0x1a_41790





LAST_CONTROL_TRANSFER:  from fffff80002aea058 to fffff80002a76740

fffff880`099b71d8 fffff800`02aea058 : 00000000`0000001a 00000000`00041790 fffffa80`00fa07d0 00000000`0000ffff : nt!KeBugCheckEx
fffff880`099b71e0 fffff800`02a4968a : fffffa80`062837e0 fffffa80`00000006 fffff8a0`00000252 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x339c8
fffff880`099b7a90 fffff800`02d5bdcf : fffff8a0`0837fc50 00000000`00000001 00000000`00000000 fffffa80`0690f690 : nt!MmCleanProcessAddressSpace+0x96
fffff880`099b7ae0 fffff800`02d3385b : 00000000`00000000 00000000`00000001 000007ff`fffde000 00000000`00000000 : nt!PspExitThread+0x92f
fffff880`099b7ba0 fffff800`02a75993 : fffffa80`062837e0 fffff880`00000000 00000000`003e3730 fffffa80`0690f690 : nt!NtTerminateProcess+0x25b
fffff880`099b7c20 00000000`77c0001a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`0020fb68 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x77c0001a


nt! ?? ::FNODOBFM::`string'+339c8
fffff800`02aea058 cc              int     3


SYMBOL_NAME:  nt! ?? ::FNODOBFM::`string'+339c8

FOLLOWUP_NAME:  MachineOwner


IMAGE_NAME:  ntkrnlmp.exe


FAILURE_BUCKET_ID:  X64_0x1a_41790_nt!_??_::FNODOBFM::_string_+339c8

BUCKET_ID:  X64_0x1a_41790_nt!_??_::FNODOBFM::_string_+339c8

Followup: MachineOwner
Hope this helps,
My System SpecsSystem Spec
31 Aug 2010   #3

Windows 7 Professional x64

I agree with Captain: that Realtek driver needs an update. Here is a download link: Realtek

Update your ATI graphics drivers as well. Here is a link:

Finally, remove Gigabyte's Easy Saver program, notorious for causing BSODs:
gdrv.sys     Thu Mar 12 23:22:29 2009
Go to Programs and Features and Uninstall it.

If you get more BSODs, please enable driver verifier. Here is my tutorial for it: Driver Verifier - Enable and Disable

...Summary of the Dumps:

Built by: 7600.16617.amd64fre.win7_gdr.100618-1621
Debug session time: Tue Aug 31 12:27:40.693 2010 (UTC - 4:00)
System Uptime: 0 days 0:03:28.145
BugCheck 1A, {41790, fffffa8000cb7120, ffff, 0}
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+33906 )
BUGCHECK_STR:  0x1a_41790
PROCESS_NAME:  drvinst.exe
Built by: 7600.16617.amd64fre.win7_gdr.100618-1621
Debug session time: Mon Aug 30 15:49:52.536 2010 (UTC - 4:00)
System Uptime: 0 days 9:19:17.987
BugCheck 1A, {41790, fffffa8000fa07d0, ffff, 0}
Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+339c8 )
BUGCHECK_STR:  0x1a_41790
My System SpecsSystem Spec

01 Sep 2010   #4

Windows 7 Ultimate x64

Thank you very much for the information!

I've already done memtest86, but did not find any problems.

I will follow your advice en post the results as soon as I am done.

My System SpecsSystem Spec
09 Sep 2010   #5

Windows 7 Ultimate x64

Hi guys!

I found the problem. One of the memory modules was defect. I opened up the pc and removed the good memory module. As soon as I booted up, I got a Blue Screen. I removed the defect memory module and placed the good one. Since then I haven't got a Blue Screen.

Thanks for all the help!
My System SpecsSystem Spec
09 Sep 2010   #6

Windows 7 Professional x64

Thanks for the update!

Glad to hear it's all sorted out.
My System SpecsSystem Spec

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