Windows 7 won't create memory.dmp crash files if you've less than 25GB of free hard drive space, annoying if you've installed the Windows debugging tools and want to diagnose your crashes. You can turn this feature off, though: browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CrashControl, create a new DWORD value called AlwaysKeepMemoryDump, set it to 1, and the crash dump file will now always be saved.
Subject: Write crash dump files 
Sun Apr 04, 2010 12:22 pm