Ntkrnlpa.exe and tcpipreg.sys BSODS

So this started out with the occasional BSOD, with various causes, such as Bad Pool Caller and Memory Management. The BSODs seem to mostly happen right when I clicked in the address bar of a new tab in Firefox. But not always. And few times, I've just had a black screen occur.

I did Scannow a bunch of times, and it does say some sectors are corrupt. I've done Chkdsk, and it says everything is fine. Then I got into Driver Verifier. A problem seem to be present with tcpipreg.sys. Just doing Verifier with that driver causes a BSOD.

However, tcpipreg.sys does not always show as the cause. What shows up on every BSOD as a cause is ntkrnlpa.exe.

I have attached the diagnostic zip. If someone knows what going on here, that would be great.

Thanks, Rudy.

P.S. It's an Asus netbook, running Windows 7 Home.

Welcome to the forums rudy108,

Code:

BugCheck C4, {0, 0, 0, 0}

Probably caused by : tcpipreg.sys ( tcpipreg!InterfaceAddressRegKeyChangeHandler+b5 )

The driver being nominated as a possible cause by Driver Verifier, seems to be a key Windows file named the TCP/IP Registry Compatibility Driver, the registry cleaners used may be a cause of this.

Scan for any missing, modified or corrupted protected Windows files with:

• SFC /SCANNOW Command - System File Checker

I understand you have ran this command previously, but you will need to upload the sfcdetails.txt file which is produced (read Option Three of the tutorial)

Remove:

Code:

Start Menu\Programs\Norton Internet Security
Start Menu\Programs\Norton

Norton is known to cause BSODs with Windows 7, please remove the programs entirely using the Norton Removal Tool, and then install and run full scans with these alternatives which work best with the operating system due to their lightweight nature on system resources and compatibility.

Install and perform full scans with:

• Malwarebytes : Free anti-malware download
• Microsoft Security Essentials | Protect against viruses, spyware, and other malware

   Information

Remember to install the free version of Malwarebytes not the free trail; untick the free trial box during installation. MSE is the most lightweight and compatible with the Windows 7 operating system

You can also view this thread for a complete free and lightweight security protection combination:

• Good and Free system security combination.

Remove:

Code:

Start Menu\Programs\ParetoLogic
Start Menu\Programs\ParetoLogic\RegCure Pro
Start Menu\Programs\SlimCleaner
Start Menu\Programs\SlimComputer
Start Menu\Programs\SlimDrivers

Remove with - Revo Uninstaller Pro - Uninstall Software, Remove Programs easily, Forced Uninstall, Leftovers Uninstaller

Windows 7 doesn't require any programs which make changes to the operating system and registry, these programs tend to cause problems by modifying and deleting files.

It is most likely the reason for the corrupted files reported by the System File Checker.

• Registry Cleaner Tests - Why NOT To Use One!

Windows is a closed source system. Developers of registry cleaners do not have the core code of Windows 7 and are not working on definitive information, but rather they are going on past knowledge and experience. Automatic cleaners will usually have to do some guesswork.

Modifying registry keys incorrectly can cause Windows instability, or make Windows unbootable. No registry cleaner is completely safe and the potential is ever present to cause more problems than they claim to fix.

Registry cleaners cannot distinguish between good and bad. If you run a registry cleaner, it will delete all those keys which are obsolete and sitting idle; but in reality, those keys may well be needed by some programs or windows at a later time.

Windows 7 is much more efficient at managing the registry than previous Windows versions. If you run any other registry cleaner and do not know precisely what you are doing, you will have problems down the road. There are no gains to be had from using a registry cleaner and the risk is great.

Reduce the number of programs at startup, to avoid any driver or program conflicts:

• Startup Programs - Change

Thanks kindly for the advice Bluerobot. I will work through those.

I will look forward to the results :)

Okay. So a few things. Those utilities shouldn't be causing anything. Basically, I downloaded those to hopefully fix the problem. I never used Regcure Pro and its deleted now, but I did use Slimdrivers to update all the drivers.

I think the BSODs were occurring before I got Norton (about 3 months ago). My older dump files have all disappeared, so it's tough to make completely sure of that. Any idea what might have happened to them? Are they temporary files?

I attached the report from the Scannow, and had a look at it myself. It is saying that autochk.exe and icm32.dll are corrupt.

The files within the store also seems to be corrupted, therefore I don't think Windows will be able to repair the files itself at all.

I would suggest attempting a Repair Install or restoring from the factory partition.

The .dmp files will be deleted by the Windows Disk Cleanup program if ran, or by any third-party file/registry cleaner programs.

The corrupt Windows files are most likely one or the possible cause for the BSODs.

Thank you, Bluerobot. So I tried a whole bunch of stuff.

I tried repair from the partition, though I'm not sure I have that option. I did "Startup Repair," but that didn't work. Ran scannow, but still bad.

I looked into the ISO thing. But since Windows came pre-installed, I'm not sure I can get an ISO.

I also found a site with all the windows files, DLL EXE Free download, and downloaded fresh copies of the 2 corrupt files. I took ownership of the corrupt files, renamed them to "old," and then copied the new files in. Then ran scannow, but it still showed them as corrupt. (Or do I have to use "takedown" command perhaps?)

I also tried some software from tweaking.com, All In One Windows Repair, but that didn't work either.

Don't download Windows .DLL files from other websites, they will cause more problems than good, you will be able to get a .ISO for your installation, by following these steps outlined within this tutorial:

• Clean Reinstall - Factory OEM Windows 7

There's a special note for Acer computers at the bottom of the tutorial page, outlining where to find the factory recovery partition, if you wish to perform a factory restore. Remember to backup all your personal data beforehand.

I may have misunderstood you. I was thinking that there was a "Windows Repair" option from the partition or the USB ISO. But I'm going to have totally redo Windows, it sounds like. Save all my files and all that. Is that right?

And I do have the partition to restore from. I did figure that out. I was on the F8, but found the F9 eventually.