Thanks for your respond. here is the content from the error log file.
2004-02-27 07:11:50.41 server Microsoft SQL Server 2000 - 8.00.194 (Intel X86)
Aug 6 2000 00:57:48
Copyright (c) 1988-2000 Microsoft Corporation
Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 1)
2004-02-27 07:11:50.41 server Copyright (C) 1988-2000 Microsoft Corporation.
2004-02-27 07:11:50.41 server All rights reserved.
2004-02-27 07:11:50.41 server Server Process ID is 688.
2004-02-27 07:11:50.41 server Logging SQL Server messages in file 'C:\Program Files\Microsoft SQL Server\MSSQL$TPA_Mercury_XP\log\ERRORLOG'.
2004-02-27 07:11:50.48 server SQL Server is starting at priority class 'normal'(1 CPU detected).
2004-02-27 07:11:50.84 server SQL Server configured for thread mode processing.
2004-02-27 07:11:50.88 server Using dynamic lock allocation. [2500] Lock Blocks, [5000] Lock Owner Blocks.
2004-02-27 07:11:50.95 server Attempting to initialize Distributed Transaction Coordinator.
2004-02-27 07:11:51.00 server Failed to obtain TransactionDispenserInterface: Result Code = 0x8004d01b
2004-02-27 07:11:51.04 spid3 Starting up database 'master'.
2004-02-27 07:11:52.72 server Using 'SSNETLIB.DLL' version '8.0.194'.
2004-02-27 07:11:52.72 spid5 Starting up database 'model'.
2004-02-27 07:11:52.86 spid3 Server name is 'TPA_Mercury_XP\TPA_Mercury_XP'.
2004-02-27 07:11:52.89 spid8 Starting up database 'msdb'.
2004-02-27 07:11:52.89 spid9 Starting up database 'pubs'.
2004-02-27 07:11:52.89 spid10 Starting up database 'Northwind'.
2004-02-27 07:11:53.10 server SQL server listening on TCP, Shared Memory, Named Pipes.
2004-02-27 07:11:53.10 server SQL server listening on 190.160.1.101:3010, 127.0.0.1:3010.
2004-02-27 07:11:53.10 server SQL Server is ready for client connections
2004-02-27 07:11:54.10 spid5 Clearing tempdb database.
2004-02-27 07:11:58.23 spid5 Starting up database 'tempdb'.
2004-02-27 07:11:59.28 spid3 Recovery complete.
2004-02-27 09:31:49.97 server SQL Server terminating because of system shutdown.
2004-02-27 09:31:50.01 server LogEvent: Failed to report the current event. Operating system error = 31(A device attached to the system is not functioning.).
2004-02-27 09:31:54.69 spid3 SQL Server is terminating due to 'stop' request from Service Control Manager.