BSOD on Windows 7 pro when I connect to the network

[siniks]

When I connect to the network, I receive BSOD on Windows 7 professional 64-bit SP1.. If I plug out my ethernet cable, the windows are working fine - as soon as I plug in the cable, I receive BSOD with Bug Check code 0x000000c5 - DRIVER_CORRUPTED_EXPOOL.. BlueScreenView software claims it's caused by driver ntoskrnl.exe and caused by address ntoskrnl.exe+7cc40

Here are things I already tried so far without luck:
- tested ram (memtest86 as well as win7 internal memory test).. it's fine
- updated ethernet card driver
- changed ethernet card with a new one
- disabled my antivirus software (Avast)
- uninstalled my antivirus software
- restored windows using system restore to 4 different restore points (one even 2 months old)
- chkdsk - it's fine
- uninstalled SP1 (don't know why but I tried)
- googled everything regarding this issue (most users found solution that it was antivirus issue.. but not here, since I unistalled it already)

The thing is that this also happens if I boot into "safe mode with networking" (while plain "safe mode" works fine). As soon as computer finishes booting I get blue screen...

You can find my dumps attached. Has anybody any clue?

My system spec:
Windows 7 professional x64 v6.1.7600 build 7600, original, OEM, installed exactly 1 year ago... CPU Intel core i5 760 CPU - 2.8GHz, 4 GB ram

 

[zigzag3143]

When I connect to the network, I receive BSOD on Windows 7 professional 64-bit SP1.. If I plug out my ethernet cable, the windows are working fine - as soon as I plug in the cable, I receive BSOD with Bug Check code 0x000000c5 - DRIVER_CORRUPTED_EXPOOL.. BlueScreenView software claims it's caused by driver ntoskrnl.exe and caused by address ntoskrnl.exe+7cc40

Here are things I already tried so far without luck:
- tested ram (memtest86 as well as win7 internal memory test).. it's fine
- updated ethernet card driver
- changed ethernet card with a new one
- disabled my antivirus software (Avast)
- uninstalled my antivirus software
- restored windows using system restore to 4 different restore points (one even 2 months old)
- chkdsk - it's fine
- uninstalled SP1 (don't know why but I tried)
- googled everything regarding this issue (most users found solution that it was antivirus issue.. but not here, since I unistalled it already)

The thing is that this also happens if I boot into "safe mode with networking" (while plain "safe mode" works fine). As soon as computer finishes booting I get blue screen...

You can find my dumps attached. Has anybody any clue?

My system spec:
Windows 7 professional x64 v6.1.7600 build 7600, original, OEM, installed exactly 1 year ago... CPU Intel core i5 760 CPU - 2.8GHz, 4 GB ram

As usual blue screen view is wrong.


These crashes were caused by memory corruption. Please run these two tests to verify your memory and find which driver is causing the problem.

If you are overclocking anything reset to default before running these tests.


1-Memtest.

*Download a copy of Memtest86 and burn the ISO to a CD using Iso Recorder or another ISO burning program. Memtest86+ - Advanced Memory Diagnostic Tool

*Boot from the CD, and leave it running for at least 5 or 6 passes.

Just remember, any time Memtest reports errors, it can be either bad RAM or a bad motherboard slot.

Test the sticks individually, and if you find a good one, test it in all slots.

Any errors are indicative of a memory problem.

If a known good stick fails in a motherboard slot it is probably the slot.

http://www.sevenforums.com/tutorials/105647-ram-test-memtest86.html



2-Driver verifier

I'd suggest that you first backup your data and then make sure you've got access to another computer so you can contact us if problems arise. Then make a System Restore point (so you can restore the system using the Vista/Win7 Startup Repair feature).

In Windows 7 you can make a Startup Repair disk by going to Start....All Programs...Maintenance...Create a System Repair Disc - with Windows Vista you'll have to use your installation disk or the "Repair your computer" option at the top of the Safe Mode menu .

Then, here's the procedure:
- Go to Start and type in "verifier" (without the quotes) and press Enter
- Select "Create custom settings (for code developers)" and click "Next"
- Select "Select individual settings from a full list" and click "Next"
- Select everything EXCEPT FOR "Low Resource Simulation" and click "Next"
- Select "Select driver names from a list" and click "Next"
Then select all drivers NOT provided by Microsoft and click "Next"
- Select "Finish" on the next page.

Reboot the system and wait for it to crash to the Blue Screen. Continue to use your system normally, and if you know what causes the crash, do that repeatedly. The objective here is to get the system to crash because Driver Verifier is stressing the drivers out. If it doesn't crash for you, then let it run for at least 36 hours of continuous operation (an estimate on my part).

If you can't get into Windows because it crashes too soon, try it in Safe Mode.
If you can't get into Safe Mode, try using System Restore from your installation DVD to set the system back to the previous restore point that you created.

http://www.sevenforums.com/tutorials/101379-driver-verifier-enable-disable.html

 

[siniks]

Thank you for your help but as I already stated - I already ran memtest86 and it reported no errors...

But I'll give Driver verifier a try...

 

[zigzag3143]

Thank you for your help but as I already stated - I already ran memtest86 and it reported no errors...

But I'll give Driver verifier a try...

Did you run memtest with each individual sticks?

 

[siniks]

no I didn't, I ran memtest86 with both ram sticks together ... does running with one-by-one change anything? If the stick is defective the errors should be displayed even if both sticks are tested together in my opinion...

I am also familiar with memory related problems - they usually occur random, mostly when you start a new program or load something big - but in my case I can watch a movie, run any program, play a game, ...... I can do everything on my computer without problems as long as I don't plug in my ethernet cable - can you explain to me what this has to do with possible defective ram?

 

[zigzag3143]

no I didn't, I ran memtest86 with both ram sticks together ... does running with one-by-one change anything? If the stick is defective the errors should be displayed even if both sticks are tested together in my opinion...

I am also familiar with memory related problems - they usually occur random, mostly when you start a new program or load something big - but in my case I can watch a movie, run any program, play a game, ...... I can do everything on my computer without problems as long as I don't plug in my ethernet cable - can you explain to me what this has to do with possible defective ram?

Sometimes errors will not be found when running all the ram together. Remember memtest tests the RAM outside the windows environment so it tests only the ram and by a process of elimination the mobo slots.

If the ethernet cable triggers it then you should start focusing on it by trying a different cable, etc.

There are no mentions of Lan driver issues in the DMP's.

 

[siniks]

I have already
- updated ethernet driver
- installed different ethernet card
- changed the cables
- connected to different router
but without any luck.

But now I guess I fixed it - by reinstalling windows - since I have original DVD without SP1 I uninstalled SP1 and then just inserted original DVD, clicked "install" and chose "upgrade" ... after 3 hours of installing and restoring settings I guess everything works now, I can plug in ethernet cable and I'm online... So I guess it's not a hardware but a software failure..

Well - let's wait a couple of days if everything is really fixed or will the error return after windows update.

 

[zigzag3143]

I have already
- updated ethernet driver
- installed different ethernet card
- changed the cables
- connected to different router
but without any luck.

But now I guess I fixed it - by reinstalling windows - since I have original DVD without SP1 I uninstalled SP1 and then just inserted original DVD, clicked "install" and chose "upgrade" ... after 3 hours of installing and restoring settings I guess everything works now, I can plug in ethernet cable and I'm online... So I guess it's not a hardware but a software failure..

Well - let's wait a couple of days if everything is really fixed or will the error return after windows update.

Good Luck and let us know if you need help