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The NTVDM CPU has encournterd an illegial instruction

Grand Chase installs but when it starts to patch I get this error. C:\WINDOWS\system32\cmd.exe The NTVDM CPU has encournterd an illegial instruction

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Ntvdm cpu encountered illegal operation Hi all! I just installed Maya 2010 from a torrent file and since then I got this famous error message. It's just appeears as three command prompts appearing at the...


If I am reading this right your issue is not the application but where you obtained the application. Maya 2010 is a modern design application and comes in 32 & 64 bit versions. It is not a 16 bit application.

When Windows encounters a legacy application it calls the NTVDM for the legacy application to run in.

The fact that the application is calling the NTVDM is highly suspicious. NTVDM is the NT Virtual Dos Machine, a way for legacy applications to run in NT environments.

NT environments are Windows NT 3.5, NT 4.0, Windows 2000 Professional, Windows XP (Home, Pro & Media Center Ed), Vista (all versions) and Windows 7.

Old (legacy) applications written for 16 bit date back to Windows 3.1 and include Windows 95, 98 and Millennium Edition.

I would obtain a copy of Maya 2010 from a reputable outlet instead of Bit Torrent as "warez" frequently contain malicious items that will infect and ruin your machine.

Feb 05, 2010 | Microsoft Windows XP Home Edition

1 Answer

The NTVDM CPU has encountered an illegal instruction.


Do you have an anti-virus program? If you are with Comcast, it is FREE to download McAfee...run your virus protection application and see if it hits on it....and then choose to quarantine, or remove...make sure you update you virus protection weekly, you never know what is out there!!

Jul 31, 2009 | Computers & Internet

2 Answers

16 -bit error on amd


may be over heating problem
open the pc side panel and clear the dust from pc and cpu fan

Jul 21, 2009 | Computers & Internet

1 Answer

Problem while starting turbo c


Try using Dev C++ which recognizes both c and c++ and is easy to use

Jun 17, 2009 | Microsoft Windows XP Professional with...

1 Answer

16 bit MS DOS Subsystem error


I found a website of people who have the same problem;as you will see Microsoft does not have a fix for it. The recommended fix is to backup your data and reload Windows.
http://www.techspot.com/vb/all/windows/t-5039-NTVDM-CPU-illegal-instruction-.html

Pls rate this solution.

Apr 13, 2009 | Microsoft Windows XP Home Edition

1 Answer

The NTVDM CPU has encountered an illegal instruction


it is a virus on your computer by the sound of it, to do a fresh install, when you initally turn the computer on, put the disc in and hit either F8 or F2, maybe F10, dependant on what it says on the inital start up screen, change the boot option to disk then you can reinstall

Jan 24, 2009 | Compaq Presario S4020WM PC Desktop

1 Answer

The ntvdm cpu has encountered an illegal instruction


I took this from another web site:
Michael Chiew said:
What did you do before this happened? What were your last deeds on the machine before the pop-up appeared?

I think what you're referring to is NTVDM CPU, not NTDVM CPU. Am I correct?

What do you know about 16-bit and 32-bit applications? Well, 16-bit applications are those that must work within the DOS (Disk Operating System) environment, a real-mode arena. NTVDM stands for NT Virtual Dos Machine.

In Windows XP, as in Windows 2000, or Windows 98, there are 16-bit and 32-bit environments (real mode and protected mode respectively).

Windows XP can only operate in 32-bit mode. All 16-bit applications must work within its own theatre of operation, typically, the first MB of physical memory (ram). Conversely, 32-bit applications must function above the first MB memory line. If either of these applications happens to slip into "alien" territory, you get an error message like "something" has encounter an illegal instruction. In other words, the wayward application is trying to slip by the immigration checkpoint.

In your case, updatemgr.exe (I suspect updatemgr.exe is a 32-bit application) has in all likelihood wondered into the 16-bit arena. Hence, NTVDM CPU issues that warning. 

Why do you continue to get the message. It's because updatemgr.exe incessantly misbehaves itself on start-up, always trying to load itself into a particular memory address where it is not welcome. Why the persistence? Updatemgr.exe has gone bonkers. It is either corrupted or damaged.

On the other hand, one cannot discount the possibility that NTVDM (NTVDM.EXE) is corrupted or damaged. So your problem lies with either updatemgr.exe or NTVDM.EXE, or both.

There are 2 things you could do.

First, establish who owns updatemgr.exe, Microsoft or some third-party owner. Second, rename updatemgr.exe and see whether the message goes away.

To establish ownership (and the function of updatemgr.exe), do a search for the file. 

Click START, select FIND. In the FIND dialog box, type: updatemgr.exe. See the directory in which the file has lodged. In Windows Explorer, get to the file, right-click on it, select PROPERTIES. Who owns it? Is there an indication of its function.

Next, rename the file. Right-click it, select RENAME and rename it to, say, updatemgr.old. RESTART your computer. Do you still get the error message. Not likely.

To clean things up a bit, perhaps it is a good idea for you to replace the current NTVDM.EXE with a new copy. Find out where NTVDM.EXE is. Then, click START, select RUN. Type in the RUN dialog box SFC to run the System File Checker. Insert your OS CD, follow the prompts, extract a copy of NTVDM.EXE and send it to its place of residence. Of course, you should also replace a copy of updatemgr.exe.

That should eliminate your problem for good.


Dec 25, 2008 | Microsoft Windows XP Home Edition

2 Answers

VISTA:The NTVDM CPU has encountered an illegal instruction


The link below is a step-by-step troubleshooter from the Microsoft website. You'll just need to follow all the instructions on the site and you should be able to fix it all by yourself. This seems to be a common error with windows.

Troubleshooting NTVDM and WOW Startup Errors

Sep 10, 2008 | Computers & Internet

1 Answer

Fix NTVDM CPU error


it generally happens due to some software,can you rember what you were doing or installing when the message came,plz give the full the error message,
if you rember the software just remove it and reinstall ,plz post

May 15, 2008 | Dell Pentium 4, 2.26 GHz (1W391)

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