A Cisco 831 router that always boot to ROMMON 1>, what can I do to configure it using IOS commands?

I have a new Cisco 831 Router, and I was trying to


configure it using CLI, and was connected to a PC


through console port.


Every thing was going fine, but all of the sudden,


Electricity goes off, and when it comes back, the


Router couldn't boot the normal way, and always gos to


RomMonitor mode, as follows:





System Bootstrap, Version 12.2(11r)YV3, RELEASE


SOFTWARE (fc2)


Technical Support: http://www.cisco.com/techsupport


Copyright (c) 2004 by cisco Systems, Inc.


C800/SOHO series (Board ID: 29-129) platform with


65536 Kbytes of main memory





rommon 1 %26gt;





The result of dir flash: command is:


File size Checksum File name


2447 bytes (0x98f) 0x9d6c runing-config





The result of boot command is:


boot: cannot determine first file name on device


"flash:"


rommon 3 %26gt;





The result of reset command is:


System Bootstrap, Version 12.2(11r)YV3, RELEASE


SOFTWARE (fc2)


Technical Support: http://www.cisco.com/techsupport


Copyright (c) 2004 by cisco Systems, Inc.


C800/SOHO series (Board ID: 29-129) platform with


65536 Kbytes of main memory





rommon 1 %26gt;





Please, tell me what to do, to be able to use the


router, and configure it using the IOS commands

A Cisco 831 router that always boot to ROMMON 1%26gt;, what can I do to configure it using IOS commands?
http://www.cisco.com/en/US/products/hw/r...
Reply:Type confreg 0x2142 at the rommon 1%26gt; prompt to boot from Flash without loading the configuration.





Type reset at the rommon 2%26gt; prompt.
Reply:If you upload the flash at this time your IOS is corrupted.





Try to upload it again.





Use UPS ......
Reply:You have to change the config register. Type 'confreg 0x142' at the prompt, confirm, type command 'reset' to reboot.


Commands vary by cisco products, can also be config-reg


HTH