Question about Microsoft Windows Vista Ultimate Edition

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Hey helpful people!! My Acer laptop has a similar problem:" Userinit logon application" This program is closing down. Now the laptop is on BUT the START MENU is NOT AVAILABLE. Can someone out there post a solution ASAP Thank you Dead Serious

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  • smiles_like Apr 14, 2009

    Thanks Ultimitloozr for your quick response. My problem is that there is no TASK BAR,no START MENU.

    I have just tried moving the cursor DOWN,up,sideways as you no avail.

    No,there is no explorer.exe in TASK MANAGER.

    By the way I am running Windows XP prof.

    The system seems to load fine then when the task bar and icons are just about to appear,I get the following message in a box.

    Data Execution Protection

    Name:Userinit Logon application

    Publisher: Microsoft Corporation

    Microsoft has decided to close this program

    Then there is a message that says "close message"

    Will this info. help you to help me?????.

  • Anonymous Apr 23, 2009

    Thanks people.
    The laptop could get into safe mode fine and nothing more.

    I got into the Registry and the Userinit line was there and all was in oder,even the comma at the end.

    I just had to re-install Windows and all is well.

    Thanks all the same.

  • ultimitloozr May 11, 2010

    Okay, let's try to manually start your desktop. Open up the Task Manager again by pressing Ctrl+Shift+Esc. Click on File -> New Task. In the text box enter explorer.exe, then press Enter. Let me know how the system responds. It should bring up your desktop. If that doesn't work, restart your computer and press F8 just as the first Windows screen appears. This will give you a menu of options. Select Safe Mode. Let me know if it boots all tha way into Windows and we can go from there.

  • ultimitloozr May 11, 2010

    So, when you click on the start button the start menu doesn't appear? Or is the entire taskbar gone? Does pressing the Windows key bring up the start menu? If the taskbar is missing, does moving the cursor to one edge of the screen make it reappear (normally the bottom unless you have previously moved the taskbar)? Can you press Ctrl+Shift+Esc to bring up the Task Manager and ensure the explorer.exe is running?


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  • 51 Answers

You've got the wrong entry in your registry.
Userinit string should be:

Note the trailing comma which must be there.
Often this entry is damaged by malware.

Ways to deal with this:

  1. Install Windows on a second partition, load the damaged registry hive and fix it.
  2. Boot with a Bart's PE or ERD Commander and fix the registry entry.
Or if you manage to get the register editor running just fix the registry key.

In the register you have to go to:
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Winlogon

Find the line named: Userinit
Make sure it points to: C:\WINDOWS\system32\userinit.exe,

If it doesn't exist, make one, if it doesn't point to the same place, change it.


Posted on Apr 15, 2009

  • Mikael Guggenheim
    Mikael Guggenheim Apr 15, 2009

    Make sure you don't forget the comma at the end!

    This is correct:

    and this is wrong:

    Just to be extra clear about it :)


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First I used knoppix to check whether userinit.exe exists in C:/windows/system32, it was there. Then I checked explorer.exe to be there in C:/windows. Then I tried to copy an userinit.exe / explorer.exe of my pc to this pc but this did not solve the problem.
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