My computer suddenly rebooted, and this was in the System section of the Event Viewer.
Event Type: Information
Event Source: Save Dump
Event Category: None
Event ID: 1001
Time: 2:03:38 PM
The computer has rebooted from a bugcheck. The bugcheck was: 0x00000077 (0xc000000e, 0xc000000e, 0x00000001, 0x0326e000). A dump was saved in: C:\WINDOWS\Minidump\Mini03
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp
I found this:
Memory Dump Files
When a Stop error occurs, Windows XP Professional writes information to the paging file (Pagefile.sys) on the systemdrive root by default. When you restart the computer in normal or safe mode after a Stop error occurs, Windows XP Professional uses paging file information to create a memory dump file in the systemroot folder. Analyzing the dump file can help provide more information about the root cause of a problem and enables offline analysis by using tools run on another computer. You can configure your system to generate one of three different types of dump files.
How can I change so I get a complete memory dump?