NTVDM CPU illegal operation......

[Shawntn]

I have a problem running an application(installing softwares). I encounter this error:

The NTVDM CPU has encountered an illegal instruction.
CS:0527 IP:0126 OP:c6 9b 4b bf c1

 

[linney]

NTVDM is the NT virtual DOS machine.

You can do some research here.

http://groups.google.com/groups?q="...gal instruction"+windows+xp&hl=en&sa=N&tab=wg

 

[Shawntn]

Thank you in advance. I'll notify when this actually works.

 

[Shawntn]

Through countless reading and researches, there are numerous Xp users including 2000 users have the same problem as i do. There isn't any luck.
Recently i upraded my windows 2000 to xp.
I have two roms, one is a dvd rom and the other one is a writer. When i try to install softwaresffice xp for example, or games i through my roms(tried both) i encounted this:

"ntvdm CPU has encountered an illegal instruction"

I know there is something to do with the 16 bit dos programs. But i don't understand, recents softwares or games should use 32 bit dos system.
Help please.

 

[linney]

Have you read these MSKB articles.


NTVDM CPU Has Encountered an Illegal Instruction (Q245184)

http://support.microsoft.com/support/kb/articles/q245/1/84.asp

Entries in Config.nt or Autoexec.nt May Cause NTVDM Errors (Q156687)

http://support.microsoft.com/support/kb/articles/q156/6/87.asp

They both talk about a file called "Command.com"

 

[Shawntn]

My "command.com" runs perfectly when i ran it. The config.nt values as follow

dos=high, umb
device=%SystemRoot%\system32\himem.sys
files=40

and so as the autoexec.nt

are exactly as it been noted.
they were dated later then 1995. 2001 actually.

i've been redoing this for the third time; installing fresh xp but i still have the problem.

 

[Shawntn]

by the way, when i installed windows 2000, it worked perfectly. when i upgrade it has that problem.

 

[Shawntn]

I found my resolution!. i am so happy.
anyone has similar problem i describe above go here

http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q310751&GSSNB

good luck everyone, my time is over! thank you all