rommon mode won't respond to keystrokes

I get the error message below and I am trying to give the command 'confreg' and the router won't respond to any keystrokes. I have tried to send the ctrl-break during boot and nothing.

Is there another method?

Thanks

BW

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System Bootstrap, Version 12.2(7r) [cmong 7r], RELEASE SOFTWARE (fc1) Copyright (c) 2002 by cisco Systems, Inc. C2600 platform with 32768 Kbytes of main memory

device does not contain a valid magic number boot: cannot open "flash:" boot: cannot determine first file name on device "flash:"

System Bootstrap, Version 12.2(7r) [cmong 7r], RELEASE SOFTWARE (fc1) Copyright (c) 2002 by cisco Systems, Inc. C2600 platform with 32768 Kbytes of main memory

rommon 1 >