Hello, Found your site through googling around the web to try and solve my problem. For the past week I got 2 sudden restarts with my 24/7 windows server 2003 enterprise r2 sp2 machine. Before that it was running at least 51 days without any problem whatsoever. The windows log states: Code: The reason supplied by user EYESSERVER1\eyesadmin for the last unexpected shutdown of this computer is: System Failure: Stop error Reason Code: 0x805000f Bug ID: unknown Bugcheck String: 0x100000d1 (0x01000014, 0xd0000002, 0x00000000, 0xf65d06c9) Comment: 0x100000d1 (0x01000014, 0xd0000002, 0x00000000, 0xf65d06c9) I tried to debug the files itself, but completely don't understand it. Installed the windows debug tools and the symbols, but it keeps telling me the symbols are not installed and furthermore, I don't really understand how to read it with the dumptool anyway. So I want to ask the people here if they can take a look at both mini dump files. Thanks in advance. Edit: Did try memtest for a couple of hours, but came out clean.