This step-by-step article describes how to examine a small memory dump file. You can use this file to determine why your computer has stopped responding.
Small memory dump files
A small memory dump file records the smallest set of useful information that may help identify why your computer has stopped unexpectedly. This option requires a paging file of at least 2 megabytes (MB) on the boot volume. On computers that are running Microsoft Windows 2000 or later, Windows creates a new file every time your computer stops unexpectedly. A history of these files is stored in a folder.
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Source: Microsoft Support -
Article ID: 315263