"Memory Could Not Be Written" - Explorer.exe & Winlogon

From: John Corson (john_at_corson.org)
Date: 12/15/03 

Date: Mon, 15 Dec 2003 15:24:16 -0500

At random times when trying to open a folder (directory),
I receive the following popup: "Application Error: The
instruction at "0x77f57ec4" referenced memory
at "0x00000067". The memory could not be "written".
A similar popup appears reading: "Application Error : The
exception unknown software exception (0xc015000f) occurred
in the application at location 0x77f6fca7."

When going to the event properties in the Administrative
Tools, I see under application events that the following
notation appears: "The shell stopped unexpectedly and
explorer.exe was restarted." It is a winlogon event with
event number 1002.

When this error occurs I have to click as many as three
popup notices. Following that, all icons on the desktop
disappear for a few seconds, the screen is refreshed,
icons re-appear and most applications running in the
background (anti-virus, etc) do not appear in the toolbar
until logging off and back on.

I have gone back to several different points in system
restore, uninstalled various software that I thought could
be the cultrate, etc. I am suspecting one major area that
I haven't tried -- Changing out memory. I recently
upgraded to ABIT KD-7 RAID m/b with Athlon XP2700+ CPU;
2048 mb DDR PC2700 ECC non buffered RAM. Would adding an
extra wait from the cycle between memory and CPU help?
I.e using Registered ECC RAM? Before I go to the added
EXPENSE of getting registered RAM I would like to have
confirmation.

I have tried swapping out memory modules, going down to
1024, etc. Currently I have 4 "sticks" of 512 each. One
person suggested having only 1 stick, no matter whether it
is buffered, registered, non buffered, non parity, etc.
He says to never use more than 1 module, yet I have always
used more than one on different systems and have never had
this issue.

Please help!

---John Corson---

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