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Resolved Question

Warning from the NTVDM CPU

by Miss_Kissen / July 23, 2011 4:53 PM PDT

When starting up the computer there comes up a small DOS screen and a warning saying:

The NTVDM CPU has encountered an illegal instruction.

Miss_Kissen has chosen the best answer to their question. View answer
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All Answers

Best Answer chosen by Miss_Kissen

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Usually some startup app.
by R. Proffitt Forum moderator / July 24, 2011 1:36 AM PDT

You, as the owner and pilot of your XP machine should be able to IDENTIFY every item in MSCONFIG. You would know to not remove what you don't understand and research those on google and more.

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by Miss_Kissen / July 24, 2011 4:24 AM PDT

You're absolutely right. I'm sorry to have bothered you.

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No bother at all.
by R. Proffitt Forum moderator / July 24, 2011 4:34 AM PDT
In reply to: Ofcourse

Didn't mean to sound short but to point out where to look and how to research.

The clue alone in your post doesn't tell enough to give you "Oh, that's the toangy virus" so I opted to help you find where it might be located and how to research those items.

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Have You Tried?
by Grif Thomas Forum moderator / July 25, 2011 4:53 AM PDT

Click on Start-Run, type: "msconfig", then click on OK. When the System Configuration Utility loads, click on the "Start" tab, then search for the C:\windows\instal~1\41E4A~\_4AE13~1.exe 16 bit application listing mentioned in your post. UNCHECK the box, then click Apply, then OK and restart the computer.

The error can occur for a lot of reasons, from a poor driver installation to malware.. Hopefully, you've also scanned your computer for malware using a variety of tools???

Hope this helps.


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Warning from the NTVDM CPU
by Miss_Kissen / July 25, 2011 6:15 AM PDT
In reply to: Have You Tried?

Hi Grif,

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Remember that malware writers always test against Norton.
by R. Proffitt Forum moderator / July 25, 2011 6:32 AM PDT

That's why we always use the other scans noted by Grif.

BEYOND MSCONFIG I use AUTORUNS and HIJACKTHIS to find those hidden things that run. writes:
"There are few things more frustrating that an unwanted program that launches every time you start your computer, Read more: Autoruns - Free software downloads and software reviews - CNET"


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It's Easy To Uncheck Those Blank Items...
by Grif Thomas Forum moderator / July 25, 2011 7:58 AM PDT

Restarting the computer will tell you whether they are the culprit.. If not found, then simply "re-checking" them again takes you back to the original configuration.

Make sure to run those malware scans suggested earlier.. I tend to use the two free programs below.

Malwarebytes Antimalware

SUPERAntispyware Removal Tool

Hope this helps.


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Unchecked and scanned
by Miss_Kissen / July 25, 2011 4:57 PM PDT

I run the SuperAntispyware program and removed some 450 tracking cookies, but nothing else was found. Restarted OK.
I also unchecked the two blank items, restarted and got a scare; a message appeared saying

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