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Windows 7: random BSOD, BCCode: 1000007e

10 Jul 2014   #1
h8dk97

Windows 7 Ultimate x64
 
 
random BSOD, BCCode: 1000007e

Hi there,

Need help with this random blue screen please. I suspect it happens when PC goes to sleep (it should after 30 minutes of being inactive) but not sure. When I start the computer after crash I get the following:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 3081

Additional information about the problem:
BCCode: 1000007e
BCP1: FFFFFFFFC0000005
BCP2: FFFFF80002E8B5B0
BCP3: FFFFF880009DE8D8
BCP4: FFFFF880009DE130
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\071014-31281-01.dmp
C:\Users\gera\AppData\Local\Temp\WER-80703-0.sysdata.xml

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Thanks in advance.


My System SpecsSystem Spec
.
10 Jul 2014   #2
HarriePateman

Windows 7 Ultimate 64-bit
 
 

Okay this is quite a complicated BSOD.

Firstly:

Code:
*** WARNING: Unable to verify timestamp for CMUACWO.sys
*** ERROR: Module load completed but symbols could not be loaded for CMUACWO.sys
I personally have never heard of this driver. After a Quick Search online i was able to find this.

Code:
Installation Path	ID:0421939 C:\Windows\system32\DRIVERS\CMUACWO.sys
Description	 C-Media USB Audio Class Driver
Version	 7.0.0013.219 built by: WDK_6001.18001
Company Name	 C-Media Inc.
I would like you to run Driver Verifier.

Driver Verifier - Enable and Disable

As i said there are multiple things flagging up in the DMP's. We will take one at a time.
My System SpecsSystem Spec
10 Jul 2014   #3
h8dk97

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by HarriePateman View Post
Okay this is quite a complicated BSOD.

Firstly:

Code:
*** WARNING: Unable to verify timestamp for CMUACWO.sys
*** ERROR: Module load completed but symbols could not be loaded for CMUACWO.sys
I personally have never heard of this driver. After a Quick Search online i was able to find this.

Code:
Installation Path    ID:0421939 C:\Windows\system32\DRIVERS\CMUACWO.sys
Description     C-Media USB Audio Class Driver
Version     7.0.0013.219 built by: WDK_6001.18001
Company Name     C-Media Inc.
I would like you to run Driver Verifier.

Driver Verifier - Enable and Disable

As i said there are multiple things flagging up in the DMP's. We will take one at a time.
Thanks for your help. I've enabled driver verifier, will check it once I come back home.

CMUACWO is the driver for Schiit Audio Bifrost D/A USB converter. It makes sense now as I started getting blue screens roughly at the same time as I installed it.
My System SpecsSystem Spec
.

11 Jul 2014   #4
HarriePateman

Windows 7 Ultimate 64-bit
 
 

Okay brilliant, because we now know what is causing the BSOD we don't need to run driver verifier.

Please uninstall and reinstall the problematic driver.

Keep m posted, I'm off to work now but i will be able to check on my lunch break.
My System SpecsSystem Spec
13 Jul 2014   #5
h8dk97

Windows 7 Ultimate x64
 
 

Hi,

Sorry I didn't have a chance to re-install the driver. Will do it sometime this week and report back.
Thanks.
My System SpecsSystem Spec
14 Jul 2014   #6
h8dk97

Windows 7 Ultimate x64
 
 

Ok
I've reinstalled the driver, will give it a few days and report back
My System SpecsSystem Spec
16 Jul 2014   #7
h8dk97

Windows 7 Ultimate x64
 
 

Re-installing the driver didn't help, my computer still reboots occasionally. Is there anything I need to do to further investigate?
Thank you.
My System SpecsSystem Spec
18 Jul 2014   #8
h8dk97

Windows 7 Ultimate x64
 
 

anyone?
My System SpecsSystem Spec
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 random BSOD, BCCode: 1000007e




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