windows 7 bsod problem with ntoskrnl.exe+f3bf0, NNSStrm.sys+22d9d

Hi.. I have been facing blue screen problem on my sony vaio laptop with model VPCCB15FG. Laptop restarts with BSOD problem and 2nd time for this week.

Using Device manager, i got to know all my drivers are updated.

Using bluescreenview, i found out that it was related to ntoskrnl.exe+f3bf0, NNSStrm.sys+22d9d.

My CPU temperature was varying between 67 degrees to 71 degrees.

I have also attached the memory dump file to this thread. Please identify the source of the problem and provide me a solution to resolve this.

Responses are appreciated.

Thank You



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Staff member
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Use !analyze -v to get detailed debugging information.

BugCheck 50, {fffffa800e4b5000, 0, fffff88004211c9c, 0}

*** WARNING: Unable to verify timestamp for NNSHttp.sys
*** ERROR: Module load completed but symbols could not be loaded for NNSHttp.sys

Could not read faulting driver name
Probably caused by : NNSHttp.sys ( NNSHttp+11c9c )

Followup: MachineOwner
the above bugcheck means invalid system memory has been accessed. Causes for this can include:
Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM).

Another common cause is the installation of a faulty system service.

Antivirus software can also trigger this error, as can a corrupted NTFS volume.

One of the causes listed above is Anti virus applications and the above dump file is giving a probably cause of:
NNSHttp.sys Wed Jun 18 11:13:53 2014: Panda Security Http Parser belonging to the Panda AV app.

Usually I would recommend uninstalling this right away but I also noticed in your driver stack several drivers in need of updating. One set in particular can cause bsod's due to it's age. Laptop drivers always come from the manufacturer (usually) and whilst I try to be very careful you still need to make sure I have the correct page for your device.

igdpmd64.sys Mon Nov 29 05:23:11 2010: Intel GPU driver. A later version can be found on machines support page:

nusb3hub.sys Thu Sep 30 05:00:03 2010: NEC Electronics USB 3.0 Host Controller Driver (previous BSOD issues with 2010 and earlier versions) please update using version found on support page:

Ok go through the rest of the drivers and update what you can including firmwares, patches and bios. If the BSOD still continues then try removing Panda Security AV.
I forgot to mention try using MSE in it's place as it's ultra stable:
Post any new dump files.

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