System error problem

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Guest

I may be in the wrong catagory for this question but it is a problem with an
application file I think. I am trying to open a program that has been on my
computer for some time now. I have recently gotten a window pop up message
that reads:

titled: 16 bit Window Subsystem
message: C:\WINDOWS\SYSTEM32\AUTOEXEC.NT
The system file is not suitable for running MS-DOS and
Microsoft Windows applications. Choose 'close' to terminate the
application.
options: Close or Ignore

Can anyone tell me how to fix this. I have tried to restore to last working
configuration and have trouble shooted every thing I know of to find a fix.
I am not a computer expert for sure but not a total dumby, but many of the
operations and systems files I am affraid to bother.
Please help, Sandy
 
c:\windows\system32\autoexec.nt. The system file is not suitable for running MS-DOS
and Microsoft Windows applications. Choose Close to terminate the application.

http://support.microsoft.com/?kbid=324767
Error message when you install or start an MS-DOS or 16-bit Windows-based program

Replace the standard version of autoexec.nt/config.nt by copying a backup copy
located in %windir%\repair\ to %windir%\system32\
(NB: %windir% is typically C:\Windows)

Start>Run and type it this without the quotes:
"cmd /c copy /y %windir%\repair\autoexec.nt %windir%\system32"

http://support.microsoft.com/default.aspx?scid=kb;EN-US;314106
Troubleshooting MS-DOS-Based Programs in Windows



16-bit MS-DOS Subsystem error while installing or running a DOS application:
http://windowsxp.mvps.org/16bit.htm

note:-
Also can be caused by a Trojan installing a file windupdater.exe and
creating registry entries for that file.
http://groups.google.com/[email protected]

AVAST (free antivirus software) can be the cause if SP2 is installed:
http://groups.google.com/[email protected]

http://support.microsoft.com/?kbid=314495
How to Troubleshoot 16-Bit Windows Programs in Windows XP
 
Thank you so much, the first step worked instantly.
I am printing all these file addresses for future use.
Thanks again,
Sandy
 
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