CISCO 1721系统出现问题

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我的CISCO 1721系统起动出现下面的问题不知道怎么会事？
请大哥们帮帮忙说一下是怎么会事！顺便说一下怎么解决！吐血求救！
% Invalid input detected at '^' marker.



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*Mar 1 00:00:05.495: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to
up
00:00:06: %SYS-5-CONFIG_I: Configured from memory by console
00:00:06: %SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-Y-M), Version 12.2(11)T8, RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Sat 29-Mar-03 16:10 by hqluong
00:00:06: %SNMP-5-COLDSTART: SNMP agent on host LBW is undergoing a cold start
00:00:06: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed
state to up
00:00:12: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed
state to down
LBW>
LBW>

一起支就到了LBW>模式啊，不知道为什么！