NTVDM Illegal Instruction

Run the System File Checker, you may have a screwed up file.

System File Checker (sfc.exe) replaces screwed up system files.

Load your XP CD in your CD drive.

Start | Run | Type or paste: sfc /scannow | Click OK

sfc /scannow scans all protected system files immediately and replaces
incorrect versions with correct Microsoft versions.

System File Checker takes a while to run.

If you have XP Home and it asks for your XP Pro CD, see this KB article...

You may be prompted to insert a Windows XP Professional CD when you run the
System File Checker tool in Windows XP Home Edition
http://support.microsoft.com/kb/897128

If SFC.EXE did anything it will be listed in the Event Viewer.

Open the Event Viewer...
Start | Run | Type: eventvwr | Click OK | Click System |

Windows File Protection will be listed under the Source column. Look at any
Windows File Protection entries.

Explains a whole bunch about sfc.exe.
scannow sfc (sfc.exe)
http://www.updatexp.com/scannow-sfc.html

Description of Windows XP and Windows Server 2003 System File Checker
(Sfc.exe)
http://support.microsoft.com/kb/310747

HOW TO Verify That Windows File Protection Is Running
http://support.microsoft.com/kb/814597

Description of the Windows File Protection Feature
http://support.microsoft.com/kb/222193

--
Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In news:EEFFED8A-016D-417D-9DF5-AC098E48F87D@microsoft.com,
David Whting hunted and pecked:
> I am receiveing the following message whenever I try to install a new
> game or at other seemingly random times:
>
> The NTVDM CPU has encountered an illegal instruction.
> CS:d3of IP:0134 OP:f0 a2 4e e1 10 Choose 'Close' to terminate the
> application.
>
> Any advice?
>
> My system is Windows XP Professional