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C:\WINDOWS\nat.exe, randomly appears

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#1 dzeratul


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  • Local time:01:26 AM

Posted 30 July 2010 - 11:47 PM

Here is the message:
"16 bit MS-DOS subsystem
The NTVDM CPU has encountered an illegal instruction.
CS:054d IP:a0b5 OP:8f 66 4c 8f 4f Choose 'Close' to terminate the application.

This is on my sister's computer, I first noticed this after my cousin was using it and the comp got a BSOD, that was due to some driver issues with the Dlink wireless adapter, which I updated so that is working now, however this little thing pops up whenever you start up the computer. I am not sure what it is. I have tried MBAM + AVIRA, and now I am not sure what I can do. Avira is no longer on the comp since we did a system restore to before it was installed (yesterday night). I am not even sure if this is an infection but perhaps some error with the computer.

Also I have tried to stop this .exe in the start up with msconfig, but it still appears, and even delete this file, but whenever I restart it reappears.

Also I can not system restore to a previous date because it says changes have been made to Driver :E and then when the computer restarts system restore has failed.

Thank you for your time and effort! Hopefully this can be solved.

Edited by dzeratul, 30 July 2010 - 11:48 PM.

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