The NTVDM CPU has encountered an illegal instruction 16Bit

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While trying to set up ancient video games like Dave I received this problem: "D:FLASHG~1DAVE.exe

The NTVD CPU has encountered an illegal instruction. CS:c000 IP:5b9a OP:0f 00 00 00 03 Choose ‘Close’ to terminate the application.

I can't start my .bat C++ gathered applications; as I attempt to press on the .bat, it posted a dark-colored CMD screen and runs.

I have scanned my PC using ESET antivirus 4 and Malware bytes but no threats have been found. I am running Windows XP.

16-bit MS-Dos Subsystem

Please help me.

Answered By 0 points N/A #119389

The NTVDM CPU has encountered an illegal instruction 16Bit


If you are getting the error ‘The NTVDM CPU has encountered an illegal instruction’ message, you may need to try the steps below:

  • Running System File Checker is the first thing you may want to try. It will scan and fix any corrupted system files on the Operating system. Go to Start > All Programs > Accessories > Right click on the Command Prompt > Choose Run as Administrator on the Security Tab > Click on Command Prompt > Type SFC /Scan now.
  • Add servers in config.nt
  • Increase ILES number in config.nt
  • Try to follow
  • Try to make sure you do not have any or similar Trojan.

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