BSOD

puneetsingh · Oct 25, 2013

Hi Dear Mods & Frndz,

As per your instructions Zip file containing reports file and Perfmon has been attached. I am also uploading a image of BSOD error. Kindly tell if any other thing is required for analyzing. Hoping to see a postive reply from your side.

Laptop Model : HP Pavilion G4
OS : Windows 7

Thanks.
jcgriff2

Patrick · Oct 25, 2013

Hi,

The attached DMP file is of the UNEXPECTED_KERNEL_MODE_TRAP (7f) bug check.

This bug check indicates that the Intel CPU generated a trap and the kernel failed to catch this trap.

BugCheck 7F, {8, 80050033, 406f8, fffff800040b0447}

The 1st parameter is 8 which indicates that an exception occurs during a call to the handler for a prior exception. Typically, the two exceptions are handled serially. However, there are several exceptions that cannot be handled serially, and in this situation the processor signals a double fault. There are two common causes of a double fault:

A kernel stack overflow. This overflow occurs when a guard page is hit, and the kernel tries to push a trap frame. Because there is no stack left, a stack overflow results, causing the double fault.

A hardware problem.

If we take a look at the call stack:

Code:

0: kd> kv
Child-SP          RetAddr           : Args to Child                                                           : Call Site
fffff800`00ba4d28 fffff800`040751a9 : 00000000`0000007f 00000000`00000008 00000000`80050033 00000000`000406f8 : nt!KeBugCheckEx
fffff800`00ba4d30 fffff800`04073672 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiBugCheckDispatch+0x69
fffff800`00ba4e70 fffff800`040b0447 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiDoubleFaultAbort+0xb2 (TrapFrame @ fffff800`00ba4e70)
fffff880`02ab8c40 fffff800`04075282 : fffff880`02ab9418 00000000`0000004f fffff880`02ab94c0 fffff880`06bcb880 : nt!KiDispatchException+0xab
fffff880`02ab92e0 fffff800`04074933 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiExceptionDispatch+0xc2
fffff880`02ab94c0 fffff800`0406da55 : fffff800`040b4d85 002d0032`0033006e 0070002d`006e0065 002e006c`00630065 : nt!KiDebugServiceTrap+0xf3 (TrapFrame @ fffff880`02ab94c0)
fffff880`02ab9658 fffff800`040b4d85 : 002d0032`0033006e 0070002d`006e0065 002e006c`00630065 00000078`00640069 : nt!DebugPrint+0x15
fffff880`02ab9660 fffff800`040b0888 : 00000000`00000000 fffff880`06b8ee60 fffff880`02ab9b68 fffff880`0684f353 : nt! ?? ::FNODOBFM::`string'+0xc4c2
fffff880`02ab9910 fffff880`069a666d : fffff880`06bcb880 00000000`00000200 fffff880`06bcb880 00000000`ffffffff : nt!DbgPrintEx+0x30
fffff880`02ab9950 fffff880`06bcb880 : 00000000`00000200 fffff880`06bcb880 00000000`ffffffff fffffa80`0a782858 : athrx+0x15866d
fffff880`02ab9958 00000000`00000200 : fffff880`06bcb880 00000000`ffffffff fffffa80`0a782858 fffff880`069c7f35 : athrx+0x37d880
fffff880`02ab9960 fffff880`06bcb880 : 00000000`ffffffff fffffa80`0a782858 fffff880`069c7f35 fffff880`06b8ee60 : 0x200
fffff880`02ab9968 00000000`ffffffff : fffffa80`0a782858 fffff880`069c7f35 fffff880`06b8ee60 fffff880`02ab9b68 : athrx+0x37d880
fffff880`02ab9970 fffffa80`0a782858 : fffff880`069c7f35 fffff880`06b8ee60 fffff880`02ab9b68 fffff880`00000000 : 0xffffffff
fffff880`02ab9978 fffff880`069c7f35 : fffff880`06b8ee60 fffff880`02ab9b68 fffff880`00000000 fffff880`02ab9b68 : 0xfffffa80`0a782858
fffff880`02ab9980 fffff880`06b8ee60 : fffff880`02ab9b68 fffff880`00000000 fffff880`02ab9b68 00000000`00000000 : athrx+0x179f35
fffff880`02ab9988 fffff880`02ab9b68 : fffff880`00000000 fffff880`02ab9b68 00000000`00000000 01000018`00002000 : athrx+0x340e60
fffff880`02ab9990 fffff880`00000000 : fffff880`02ab9b68 00000000`00000000 01000018`00002000 745f7874`5f687461 : 0xfffff880`02ab9b68
fffff880`02ab9998 fffff880`02ab9b68 : 00000000`00000000 01000018`00002000 745f7874`5f687461 66756264`64617178 : 0xfffff880`00000000
fffff880`02ab99a0 00000000`00000000 : 01000018`00002000 745f7874`5f687461 66756264`64617178 65725f64`6c6f6820 : 0xfffff880`02ab9b68

We can see many athrx.sys (Atheros network adapter driver) calls before the double fault, which more than likely indicates that's what caused it and then the eventual bug check itself. Usually when we have network related crashes like this they are caused by one of two things:

1. Network driver(s) themselves need to be updated. Visit HP's website and ensure all of your network drivers are the latest vesion - HP Support, Drivers, Contact and Help Forums | HP ® Support

2. 3rd party antivirus or firewall software causing network conflicts. I took a quick look at the loaded modules list and it appears you have neither installed, but just to be sure, do you?

Regards,

Patrick

puneetsingh · Oct 27, 2013

Thanks Patrick for your quick response.

I would like to cofirm,

1) Although all the drivers were already upto date, but still i checked at HP site for any updates and reinstalled the latest drivers. (i.e LAN, Wifi and Bluetooth)

2) No, I haven't installed any 3rd party firewalls only windows inbuilt firewall is operational. Though freeware Avira Antivirus has been installed.

By the way i would like to mention my personal observations : Firstly there is no certain patter to these BSOD errors sometimes they occur once a month sometimes twice a day. Secondaly laptop have started droping wifi signal every now and then. So each time i have to reconnect.

Patrick · Oct 27, 2013

Thanks for the information, especially the mention of Avira. I would definitely for temporary troubleshooting purposes go ahead and remove Avira and enable Windows Defender. Avira may be causing conflicts.

Regards,

Patrick

puneetsingh · Oct 28, 2013

Hi Partick,

As per your recomendation Avira has been uninstalled & window defender has been enabled.

Should i install Mircosoft Security Essential since there is no Anti Virus in my system now. Absence of Anti Virus is sort of inviting worries while surfing net.

Patrick · Oct 28, 2013

Hi,

MSE is a great choice for now, yes.

Regards,

Patrick

puneetsingh · Oct 31, 2013

Thanks Patrick for all your support.

For now I will try this MSE combination and ll update with the outcome. :)

Patrick · Oct 31, 2013

My pleasure, keep me updated.

Regards,

Patrick

puneetsingh · Nov 6, 2013

Hii Patrick,

Unfortunately BSOD appeared again twince in last three days.

puneetsingh · Nov 6, 2013

By the way can there be any releation between BSOD and laptop dropping wifi signals every now and then. This problem wasn't present few months back.

Patrick · Nov 6, 2013

It's possible, have you tried downloading latest drivers, uninstalling your network / wifi drivers, and installing the latest version from the manufacturers website?

Also, please attach LATEST DUMPS ONLY.

Regards,

Patrick

puneetsingh · Nov 10, 2013

Yes Patrick, All the "Drivers" and even "Windows Updates" are up to date. Kindly find the latest dump files in the attachments.

Patrick · Nov 10, 2013

We're still seeing constant athrx.sys crashes. Given you have installed the latest Atheros drivers via HP's website I am not sure there's much left we can do. The only thing left to try is to grab the drivers from Atheros' website instead, but since I do not know your adapters model # I can't link them. Do you happen to know, or can you provide me your HP model # so I can try and find out?

Regards,

Patrick

usasma · Nov 11, 2013

Qualcomm Atheros AR9485 802.11b/g/n WiFi Adapter

from $systeminfo.txt

Patrick · Nov 11, 2013

Thanks, John : )

Here, try this one - Drivers for Atheros AR9485 and Windows 7

Scroll down a bit until you see 'Click for download'. Once you've done that, you'll be redirected to a new page and after a few seconds it will pop up and ask you to download the zip. Once that's downloaded, extract it to a folder. As far as I know, Atheros' drivers (at least from this site) are not .exe's and are .inf's instead. With this said, you'll need to right-click the.inf file itself and select 'Install'. If this does not work, refer to this on how to install drivers via .inf files:

After you locate the .inf file for the driver that you want to install, manually install the new driver. To do this, follow these steps:

Click Start

, right-click Computer, and then click Properties.
In the Tasks pane, click Device Manager.

If you are prompted for an administrator password or confirmation, type your password or click Continue.
In Device Manager, locate the device for which you want to install the driver.

Note To display hidden devices, click Show hidden devices on the View menu.
Right-click the device, and then click Update Driver Software.
Click Browse my computer for driver software, click Let me pick from a list of device drivers on my computer, and then click Have Disk.
In the Install From Disk dialog box, click Browse, locate an .inf file for the device driver that you want to install, and then click Open.
Follow the steps in the Update Driver Software DeviceName dialog box to update the driver.

Regards,

Patrick

puneetsingh · Nov 12, 2013

Hii Patrick,

Thanks again for your support. According to above mentioned tutorial i was able to update my wifi driver manually. Hopefully it will solve the problem.

By the way HP model No is: HP Pavilion G4-1200tx.

Patrick · Nov 12, 2013

Great work, thanks for the update. Keep me updated!

Regards,

Patrick

puneetsingh · Nov 20, 2013

Hii Patick..

So far so good... No BSOD error..:)

Patrick · Nov 20, 2013

Great, sounds like it's solved to me. Thanks for the update!

Regards,

Patrick

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