My PC shuts down when I open cmd

Anonymous User - Updated on Jan 16, 2019 at 08:52 AM
Gervarod Posts 306 Registration date Saturday March 27, 2010 Status Member Last seen June 8, 2014 - Jul 25, 2010 at 10:15 AM
Hello, my pc shuts down when I open cmd. What is the cause of this problem? Viruses I think, how can I solve this and how to remove the viruses manually?

System Configuration: Windows 7 / Firefox 3.6.8

2 replies

Gervarod Posts 306 Registration date Saturday March 27, 2010 Status Member Last seen June 8, 2014 21
Updated on Sep 9, 2019 at 07:45 AM
This is a virus activity which prevents to use command prompt on the infected machine, this virus is called PC-OFF.bat trojan which turns off or shutdown your computer when ever you try to use command prompt by any means.

The infected computer restarts on opening command prompt.

This PC-OFF.bat virus creates the following files
  • password_viewer.exe
  • bar311.exe
  • pc-off.bat

at the following locations
  • c:\windows\bar311.exe
  • c:\windows\password_viewer.exe
  • c:\windows\
  • c:\windows\pc-off.bat

Another variant of the this virus is recognized as bar311.exe virus A.K.A. winzip123 which will have almost the same symptoms and when ever you boot your Windows Xp computer in safe mode it will say a message Thank You!!! Password:Winzip123

Let's find out the fix to remove this shutdown virus completely from computer.


1. Open Task Manager by pressing Ctrl+Shift+Esc, click the process tab and locate the process named `password_viewer.exe` or `bar311.exe` or `` one by one and right click and select `End Process'

2. Open Start Menu >> Run, type regedit and press Enter key or OK button

3. Navigate to the following path


4. Locate the key named Userinit in right pane

"Userinit" = C:\WINDOWS\system32\userinit.exe,bar311.exe"
double click and remove the text `bar311.exe' from the above
"Userinit" = C:\WINDOWS\system32\userinit.exe,"
double click and remove the text `' from the above
"Userinit" = C:\WINDOWS\system32\userinit.exe,password_viewer.exe"
double click and remove the text `password_viewer.exe' from the above

Note: Please make sure after editing the above Userinit key value it should be only

C:\WINDOWS\system32\userinit.exe (as shown in the image below)

or try this one to get rid of it.

The pc-off.bat contains the syntax like this"C:/path/shutdown -s -f -t 2 -c" which automatically shutdown your computer when you run the cmd.exe.

Manual removal is outlined below. Download bar311.exe - winzip123.exe Automatic Remover here.

Manual removal:

1. upon start up.... after os loading... go to task manager by pressing CTRL+ALT+DEL then kill password_viewer.exe or bar311.exe or

2. EDIT the following registry entries thru regedit at start/run

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Userinit"="userinit.exe,bar311.exe" ---> remove ", bar311.exe" only... leave userinit.exe because this is used by Windows when you log-in...


[HKEY_CURRENT_USER\Software\Microsoft\Command Processor]
"autorun"="c:\Windows\pc-off.bat" --> remove "c:\Windows\pc-off.bat" or delete the autorun key.

3. go to your flash drive (USB drive), please use the folders view in the explorer and use the navigation panel on the left side when accessing the drives to avoid triggering the autorun... then delete autorun.inf and password_viewer.exe or bar311.exe

4. open notepad then type what is shown below as is...

@echo off
del /a /f c:\Windows\bar311.exe
del /a /f c:\Windows\password_viewer.exe
del /a /f c:\Windows\
del /a /f c:\Windows\pc-off.bat

then save this as remove.bat then click to run.... this will remove the virus...

hope to get a reply back from you buddy.

Regards, Gervarod