Error: LogonUI.exe application error, The instruction at 0x00000000 referenced memory at 0x00000000. The memory could not be written. Click OK to terminate the program

Original title: This happens with ALL applications, but specifically LogonUI.exe: LogonUI.exe application error: The instruction at 0x00000000 referenced memory at 0x00000000. The memory could not be written. Click OK to terminate the program.

FIRST OF ALL I would like to let you all know that I can not log on to my Windows 7 in any way: Safe mode, normal mode, none worked. I am running Splashtop Browser (and browsing is all I can do right now) from my Vaio laptop, which gives me the same error for EVERY application/exe file that I try to run in Windows 7, and that includes CMD.exe.

Okay so I installed a custom Logon background with an application from deviantART (I forgot which, itś on my Windows 7) a few days ago. Everything worked fine. Today I downloaded visual styles and installed those styles with Theme Manager [http://bickelk.deviantart.com/art/Theme-… which I used for about a month without problems.

Today I installed a lot (I cant remember the names of the themes) and it gave me an error telling me to restart my laptop.

And then I did.

But now, every time I try to boot my laptop and the logon screen appears, it gives me the following error: LogonUI.exe application error
The instruction at 0x00000000 referenced memory at 0x00000000. The memory could not be written. Click OK to terminate the program

And thatś all. I cant access Windows 7 in any way as I said- my only access to the internet right now is through Splashtop Browser. PLEASE HELP. :(

I have:
Vaio VPCEB11FX Laptop
Windows 7 Home Premium x64 bit
7600 Build I think.

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Answer

Nithyananda J

Hi Mikagarcia,

1. Did you try Last Known Good Configuration in the advanced startup option?

Step 1:

You may unplug all the external devices except keyboard and mouse and check if you are able to boot to the desktop.

Step 2:

I would recommend you perform startup repair. Follow these steps:

Follow the steps provided below:

a. Please insert the Windows 7 DVD and reboot the computer.
b. When we are prompted to press a key to boot from the DVD, please press Enter or the space bar.
c. Choose your language settings, and then click Next.
d. Click Repair your computer.
e. Select the operating system you want to repair, and then click Next.
f. On the System Recovery Options menu, click Startup Repair. Startup Repair might prompt you to make choices as it tries to fix the problem, and if necessary, it might restart your computer as it makes repairs.

Refer:

Startup Repair: frequently asked questions
http://windows.microsoft.com/en-US/windows7/Startup-Repair-frequently-asked-questions

Step 3:

If Step 2 fails then, I would suggest you to try system restore from the System Recovery Options and check if it helps.

Refer:

What are the system recovery options in Windows 7?
http://windows.microsoft.com/en-US/windows7/What-are-the-system-recovery-options-in-Windows-7

Thanks and Regards:
I. Suuresh Kumar - Microsoft Support.

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Error: LogonUI.exe application error, The instruction at 0x00000000 referenced memory at 0x00000000. The memory could not be written. Click OK to terminate the program

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Error: LogonUI.exe application error, The instruction at 0x00000000 referenced memory at 0x00000000. The memory could not be written. Click OK to terminate the program

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