System Crash after reboot.

After a routine reboot on my 2003 server blue screen appears and system crash. Problem resolve after another cold shutdown and i have check below error in my event log.

Event Type:      Warning
Event Source:      USER32
Event Category:      None
Event ID:      1076
Date:            7/20/2008
Time:            10:47:12 AM
User:            PROD\op
Computer:      PROD
Description:
The reason supplied by user PROD\op for the last unexpected shutdown of this computer is: System Failure: Stop error
 Reason Code: 0x805000f
 Bug ID:
 Bugcheck String: 0x0000000a (0x00000000, 0xd000001b, 0x00000001, 0xe0626560)
 Comment: 0x0000000a (0x00000000, 0xd000001b, 0x00000001, 0xe0626560)

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 0f 00 05 08


A memory DUMP file is written in c:\windows\memory.dmp