tawxic Posted August 20, 2005 Share Posted August 20, 2005 (edited) okay, start -> run -> cmd:opens the console box, black bg, with nothing writting in it, and gives me this error:|[u]16 Bit MS-DOS Subsystem[/u]__________________||C:\WINDOWS\system32\cmd.com|The NTVDM CPU has encountered an illegal instruction.|CS:055c IP: 0102 OP:ff ff 83 3e 51 Choose 'Close' to teminate the application| [ Close ] [ Ignore ]|_____...|Ignore and close both close it.Then, when I open 'command':I can "dir" and "ipconfig" but I cannot 'ping', it gives me an identical error to the one above.Any ideas? Edited August 20, 2005 by tawxic Link to comment Share on other sites More sharing options...
army20 Posted August 21, 2005 Share Posted August 21, 2005 (edited) My guess is that a virus may have replaced your system32\cmd.exe because the original one do not use NTVDM (New Technologie Virtual Dos Machine) Edited August 21, 2005 by army20 Link to comment Share on other sites More sharing options...
army20 Posted August 21, 2005 Share Posted August 21, 2005 You may also check this Knowledge base : http://support.microsoft.com/kb/q196453/ it is for windows 2000 but you may find information about your problem Link to comment Share on other sites More sharing options...
what3v3r Posted August 21, 2005 Share Posted August 21, 2005 try start-run-"sfc /SCANNOW"you will need your windows XP cdsfc scans all your system files and replaces them with the original if it has been altered Link to comment Share on other sites More sharing options...
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