I used a live CD and found, but I can't boot in in safe mode and whatever I do reg entry changes back !!
HKEY_local machine/software/microsoft/WindowsNT/Currentversion/winlogon/shell SHOULD have a value of "explorer.exe"
BUT has "cmd.exe /k start cmd.exe"
HKEY_local machine/software/microsoft/WindowsNT/Currentversion/winlogon/shell SHOULD have a value of "explorer.exe"
BUT has "cmd.exe /k start cmd.exe"