One of your memory dumps referred to this Stop Error Report
http://msdn2.microsoft.com/en-us/library/ms793247.aspx
It's not overhelpful but points again to a driver.
Quote from link below: This indicates that the memory management Page
File Number list is corrupted. Can be caused by corrupt physical RAM, or
by drivers passing bad memory descriptor lists.
http://aumha.org/a/stop.htm
Why did you make changes to your memory? Who advised you on what memory
to install? How many memory sticks are currently installed?
What follows next was written for a desktop computer and not with a
laptop in mind. If your RAM memory is made up of more than one stick and
if so this offers a simple way to heck for faulty memory. Open the
computer casing and carefully remove one memory card (stick) from it's
slot and run the computer with it removed to see whether the problem
occurs. Repeat the process putting the first memory card back in and
removing the second memory card and test that card. Make sure you allow
sufficient time for an error to occur. When removing the card you will
need to lift a retaining clip each end of the memory card to allow it to
be removed. Take great care not to touch the motherboard. You can also
get an Anti-Static wrist band from a computer store to prevent a static
electricity discharge from you damaging the motherboard.
http://www.ehow.com/how_895_install-ram.html
http://www.elephantboycomputers.com/page2.html#Hardware_Tshoot
http://h10025.www1.hp.com/ewfrf/wc/...=uk&lc=en&dlc=en&product=86586&dlc=en&lang=en
A lot of documented causes of error can be ancient history. I read the
Symantec report on the HP site. The report related to a problem years
ago. You get the same with many Microsoft Knowledge Base Articles. They
often refer to a problem that Microsoft subsequently fixed.
Another source of information you have not, so far as I am aware, looked
at.
Please post copies of all Error and Warning Reports appearing in
the System and Application logs in Event Viewer for the last boot. No
Information Reports or Duplicates please. Indicate which also appear in
a previous boot.
You can access Event Viewer by selecting Start, Control Panel,
Administrative Tools, and Event Viewer. When researching the meaning
of the error, information regarding Event ID, Source and Description
are important.
A tip for posting copies of Error Reports! Run Event Viewer and double
click on the error you want to copy. In the window, which appears is a
button resembling two pages. Click the button and close Event
Viewer.Now start your message (email) and do a paste into the body of
the message. Make sure this is the first paste after exiting from
Event Viewer.
--
Hope this helps.
Gerry
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FCA
Stourport, England
Enquire, plan and execute
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