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Windows 7: c000021a Fatal System Error

27 Feb 2013   #21

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1

Do one more thing ..... upload your MSINFO32.nfo file.
  1. Click on the start button
  2. Type "msinfo32" (without quotes) in the search bar of the start menu, click the resulting link. It will open the System Information window.
  3. File>Save. In the "File Name" filed, put "MSINFO32" (without Quote), give the save location to desktop, and click the "save" button.
  4. Give the time for processing, it will save a .nfo file on your desktop.
  5. Zip it, and upload it following the instruction.

My System SpecsSystem Spec

27 Feb 2013   #22

Windows 7 Ultimate x64

Okay, here's the MsInfo32 file.
My System SpecsSystem Spec
27 Feb 2013   #23

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1

Start Menu\Programs\DAEMON Tools Lite
Start Menu\Programs\MagicISO
Daemon Tools, Alcohol 120% and Power Archiver Pro uses SCSI Pass Through Direct (SPTD), which is a well known BSOD causer. Uninstall the program at first. Then download SPTD standalone installer from, and execute the downloaded file as guided below :
  • Double click to open it.
  • Click this button only:
  • If it is grayed out, as in the picture, there is no more SPTD in your system, and you just close the window.
MagicIso does not use SPTD, but as it also makes a disc Image emaluator, better you dont use that feature. Almost all kind of disc image emaluators are problematic, today or tomorrow.

Start Menu\Programs\NetBalancer
As you are getting network blockage, Better you dont use NetLimiter or Net Balancer, specially dont place NetLimiter at startup. Free up the startup.
  1. Click on the Start button
  2. Type “msconfig (without quotes), click the resulting link. It will open the System Configuration window.
  3. Select the “Startup” tab.
  4. Deselect all items other than the antivirus.
  5. Apply > OK
  6. Accept then restart.
Start Menu\Programs\Auslogics\Disk Defrag 
Start Menu\Programs\Puran Utilities
Auslogics is sometimes problematic, and Puran does the job much better. So, get rid of Auslogics, positively.

Start Menu\Programs\Avira
Start Menu\Programs\Avira\Avira Desktop
Start Menu\Programs\Spybot - Search & Destroy
Start Menu\Programs\SUPERAntiSpyware
Spyware .... how many have you noticed, if you use the internet fairly? Two programs fro spyware protection? No need. They are also network killer. Uninstall them. Uninstall Avira using Avira AntiVir Removal Tool. Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner.
Download, install and update those, and then run full system scans with both of them, one by one.

Start Menu\Programs\GIGABYTE
Start Menu\Programs\GIGABYTE\EasySaver
Start Menu\Programs\GIGABYTE\ET6
Start Menu\Programs\MSI Kombustor 2.4
Start Menu\Programs\MSI Afterburner
Start Menu\Programs\MSI Afterburner\SDK
All those are bloatwares .... not only not needed, but also troublesome. Better you uninstall them all.

Version    6.1.7600 Build 7600
Install Service pack 1.
Learn how to install Windows 7 Service Pack 1 (SP1)
Service Pack Center - Microsoft Windows

Name    [00000007] Realtek PCIe GBE Family Controller
Driver    c:\windows\system32\drivers\rt64win7.sys (, 404.10 KB (413,800 bytes), 9/26/2011 11:08 PM)
Update Realtek network Driver from Realtek

Update the VitrualBox Guest Addition, too.

Name    ATI Radeon HD 4250
Driver    c:\windows\system32\drivers\atikmpag.sys (, 351.50 KB (359,936 bytes), 7/4/2012 10:40 AM)
Update your ATI/AMD display driver.
You can get it from the link in our forum, Latest AMD Catalyst Video Driver for Windows 7, or you may go to AMD Graphics Driver and Software and opt for Automatically Detect and Install the appropriate driver for your card.

During installation, you may opt for advanced installation, and install the display driver only, not the Catalyst Control Center.

After doing all those, let us know the situation ....
My System SpecsSystem Spec

28 Feb 2013   #24

Windows 7 Ultimate x64

Wow, a big to-do list for me.
I'm a bit busy, and may do this by Monday.
My System SpecsSystem Spec
07 Mar 2013   #25

Windows 7 Ultimate x64

I did most of the things from the above mentioned list. I have some reasons for not replacing Avira with MSE, but don't worry; I will be safe from viruses.
And the boot time is well; I ran the Restart-Time vb script and got 88 seconds, which sound quite fair to me. :P

Thank you again for your help.
Will be back in-case if there's something still left and causing problem. :'D
My System SpecsSystem Spec
07 Mar 2013   #26
Vir Gnarus

Microsoft Community Contributor Award Recipient

Windows 7 64-bit

I think the intent isn't so much that "MSE is better, use that instead", but that there may be bugs inherent in the Avira AV software that are nonexistent in MSE (the same could be true other way around too of course). So the desire is to switch AV solution to see if things stabilize.
My System SpecsSystem Spec
10 Mar 2013   #27

Windows 7 Ultimate x64

Okay, I am back with problems. :P
I had run WDO scan the other day; quick scan was cool and then I had run full scan too; though it got stuck at some moment (looking at the bar I can say about 60% was done). I restarted and ran the scan again, but same thing occurred. Then I went to sleep and other day it slipped out of my mind and I forgot to notify ya about it. :|

Now since you recommended to use another AV, I installed Avast when I ran full scan, my PC went slow when it progressed to about 65%, and there was a moment when PC froze. That occurred thrice, at 1st crash I waited, and after few minutes, the PC rebooted by it's own before I saw a glance of black screen with random white thick lines. When it happened again, I didn't wait and rebooted the PC. On third time I tried to look which directory was being scanned, and it said - c:\..\77_39dec...... a big string, mixture of numbers and alphabets.

I'll be running a boot time scan, while you can look into this again and tell me about the possibilities. lol
Also, if it doesn't work, I will install MSE.

PS: I remember, while I ran MBytes scan when PC was back to normal speed, PC went damn slow at some moment, but everything got back to normal in a while.
My System SpecsSystem Spec
10 Mar 2013   #28

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1

My System SpecsSystem Spec
11 Mar 2013   #29
Vir Gnarus

Microsoft Community Contributor Award Recipient

Windows 7 64-bit

The file it's hitting is either a dummy file created by a corrupt filesystem (I take it you've ran CHKDSK and Seatools so far), or is actually a viral file that is causing a deadlock when attempting to access since it's already infected the system. In which case Arc's recommendation of using the rescue disk is noteworthy, since you'll need to take care of this potential infection outside of the Windows OS environment. I recommend doing a CHKDSK first if you haven't already just in case it isn't some filesystem fluke.
My System SpecsSystem Spec
12 Mar 2013   #30

Windows 7 Ultimate x64

I ran Kaspersky Disc Rescue's scan and it detected nothing. I had selected everything for scanning.
And yes, I did run CHKDSK and SeaTools earlier when ya both recommended to.

I ran CHKDSK again, I did it 4 times:
First attempt - I did it using Drive tools, in properties. I restarted and it said something like "Volume is clean"; nothing was scanned and PC rebooted.
2 - I did it using the .reg(registry file that was available for download on that link), the scan started, and the PC rebooted in very less time and I felt like it wasn't complete yet.
3 - So again I scheduled it using drive tools, and this time I scheduled it twice. The scan now started and this one took good amount of time. If I am not wrong it took about 1.5 hours.
4 - Since I scheduled it twice, after rebooted the chdsk screen flashed again, and I got that same message... something like "Volume is clean"

Gotta run Avast again to check if the problem is gone. Also, just scanning the Windows dir tell if that problem is gone? I don't have much time as of now, so if a Full Scan is necessary, I will only be able to do it tomorrow.

PS: After 1st attempt of chkdsk, when PC booted, I got this message:

Just got it once yet, don't know if it's related with current issue, but if it appears again I might re-install Avast or just switch to another AV.

And thank you to both for being very much helpful!
My System SpecsSystem Spec

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