<div>
<a href="http://support.microsoft.com/kb/q196453/" rel="ugc nofollow">http://support.microsoft.com/kb/q196453/</a>
</div>


<div>
<div class="content wysiwyg-content">
Has anyone ever encountered the following problem? &nbsp;If so, please advise as to how to correct it.<br />
<br />
<br />
16 bit MS-DOS Subsystem<br />
<br />
<br />
C: Windows\Instal~1\AC76B~\SC<wbr />_ACR~1.exe<wbr /><br />
<br />
The NTVDM CPU has encountered an illegal instruction<br />
<br />
CS:Oe5d IP:OP:ff ff ff 00 00<br />
<br />
Choose close to terminate the application<br />
<br />
Close &nbsp; &nbsp; &nbsp; &nbsp;Ignore
</div>
</div>


Has anyone ever encountered the following problem?  If so, please advise as to how to correct it.


16 bit MS-DOS Subsystem


C: Windows\Instal~1\AC76B~\SC_ACR~1.exe

The NTVDM CPU has encountered an illegal instruction

CS:Oe5d IP:OP:ff ff ff 00 00

Choose close to terminate the application

Close        Ignore

The NTVDM CPU has encountered an illegal instruction

Software is any set of instructions that directs a computer to perform specific tasks or operations. Computer software consists of programs, libraries and related non-executable data (such as documentation). Computer software is non-tangible, contrasted with computer hardware, which is the physical component of computers. Software written in a machine language is known as "machine code". However, in practice, software is usually written in high-level programming languages than machine language. High-level languages are translated into machine language using a compiler or interpreter or a combination of the two.