You have to Troubleshoot NTVDM Startup Errors in your pc:
Check the Autoexec.nt and Config.nt for anything unusual or anything that can be commented out.
Rename Autoexec.bat.
Check for changes in Win.ini or System.ini, or replace by expanding the original files off of the installation media.
Rename all other *.ini files if possible
In the Config.nt file, allow only:
Code:
dos=high, umb
device=%SystemRoot%\system32\himem.sys
files=60
shell=%SystemRoot%\system32\command.com /e:4096
More information here.
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