If your anti-virus cannot clean bar311.exe virus you might want to try manually remove it by doing these simple steps:
1. Open Notepad
Start > All Programs > Accessories > Notepad
or
Start > Run > type notepad
2. Type these codes

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

3. Save file type as “All [...]