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DominoTabitha asked on

problem with winlogon.exe error at boot


I have been having a problem with a winlogon.exe Application Error when I reboot my Windows XP with SP2 (fully updated as of 26-5-08). The full error is:

The instruction at "0x00a30899" referenced memory at "ox00a31f7c". The memory could not be "written".

Click on OK to terminate the program
Click on Cancel to debug the program.

Clicking on either option causes the system to restart and I end up in the same place again. Sliding the error window out of the way allows me to continue, but the PC becomes unstable after a few hours/days.

I know that this error has been featured here at Experts Exchange a number of terms (I HAVE searched!) but the answer seems to be in the HiJackThis log, about which I know nothing.

I have run HJT and analyzed it at the HJT website, linked by


I hope I haven't asked a real newbie question, but that is what I am... a newbie!


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8/22/2022 - Mon

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Can you please attach a fresh hijackthis log here on the thread as "Code Snippet"
If problem persists, or if that file is still present and refuses to go, we can then try combofix or other tools.

Hi rpqgamergirl,

Thanks for the info... sorry I couldn't get back to you sooner (it was that darn "sleep" thing again).
Sorry about the HJT log having already been analyzed. I fixed the

O20 - Winlogon Notify: ntvdmd32 - C:\WINDOWS\SYSTEM32\ntvdmd32.dll -

entry as you suggested and the error no longer appears! It seems strange not to have the window on my screen all the time ;-)

Many thanks

Many thanks rpggamergirl for the solution :-) I'm sure my PC will be more stable because after running for a few hours/days I would BSoD with an error related to winlogon. Thanks again :-)   Robin
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck

Hi Robin,

I'm glad to know that the error is gone, :)