Probleme demarrage routeur routernam(boot)

Bonjour

un debut de piste ici :
https://community.cisco.com/t5/networking-documents/router-boots-into-boot-mode-without-any-errors-displayed-on-the/ta-p/3110037

Router(boot)>sh version
Cisco Internetwork Operating System Software
IOS (tm) 1600 Software (C1600-BOOT-R), Version 11.1(7)AX, EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1996 by cisco Systems, Inc.
Compiled Fri 18-Oct-96 00:20 by kuong
Image text-base: 0x04018060, data-base: 0x02005000

ROM: System Bootstrap, Version 11.1(7)AX [kuong (7)AX], EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)

Router uptime is 1 minute
System restarted by power-on
System image file is "eprom:c1600-boot-r.111-7.AX.", booted via ROM

cisco 1600 (68360) processor (revision C) with 1536K/512K bytes of memory.
Processor board ID 04158589
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
1 Ethernet/IEEE 802.3 interface.
1 Serial(sync/async) network interface.
System/IO memory with parity disabled
8K bytes of non-volatile configuration memory.
4096K bytes of processor board PCMCIA flash (Read/Write)

Configuration register is 0x2102

Router(boot)(config)#config-register 0x2102
Router(boot)(config)#exit

Router(boot)#reload

System configuration has been modified. Save? [yes/no]: n
Proceed with reload? [confirm]

%SYS-5-RELOAD: Reload requested

System Bootstrap, Version 11.1(7)AX [kuong (7)AX], EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)
Copyright (c) 1994-1996 by cisco Systems, Inc.
C1600 processor with 2048 Kbytes of main memory

program load complete, entry point: 0x4018060, size: 0x1da950

Notice: NVRAM invalid, possibly due to write erase.

--- System Configuration Dialog ---r. Transceiver problem?

At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.

Please Wait. Autoinstall being attempted !!!!!!!!!!!!!!!!!!!!!!!!!!!!!boot of "cisco2-C1600" using boot helper "eprom:c1600-boot-r.111-7.AX." failed
error returned: No usable interfaces
loadprog: error - on file open
boot: cannot load "cisco2-C1600"?

System Bootstrap, Version 11.1(7)AX [kuong (7)AX], EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)
Copyright (c) 1994-1996 by cisco Systems, Inc.
C1600 processor with 2048 Kbytes of main memory

*** BUS ERROR ***
access address = 0x2200000
program counter = 0x40011c0
status register = 0x2700
vbr at time of exception = 0x4000000
special status word = 0x022d
faulted cycle was a byte write

monitor: command "boot" aborted due to exception!?Hh???? Bootstrap, Version 11.1(7)AX [kuong (7)AX], EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)
Copyright (c) 1994-1996 by cisco Systems, Inc.
C1600 processor with 2048 Kbytes of main memory

program load complete, entry point: 0x4018060, size: 0x1da950

Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706

Cisco Internetwork Operating System Software
IOS (tm) 1600 Software (C1600-BOOT-R), Version 11.1(7)AX, EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1996 by cisco Systems, Inc.
Compiled Fri 18-Oct-96 00:20 by kuong
Image text-base: 0x04018060, data-base: 0x02005000

cisco 1600 (68360) processor (revision C) with 1536K/512K bytes of memory.
Processor board ID 04158589
X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.
1 Ethernet/IEEE 802.3 interface.
1 Serial(sync/async) network interface.
System/IO memory with parity disabled
8K bytes of non-volatile configuration memory.
4096K bytes of processor board PCMCIA flash (Read/Write)

Notice: NVRAM invalid, possibly due to write erase.
--- System Configuration Dialog ---

At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Would you like to enter the initial configuration dialog? [yes]: no

Would you like to terminate autoinstall? [yes]: no

Please Wait. Autoinstall being attempted !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Press RETURN to get started!

Cisco Internetwork Operating System Software
IOS (tm) 1600 Software (C1600-BOOT-R), Version 11.1(7)AX, EARLY DEPLOYMENT RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1996 by cisco Systems, Inc.
Compiled Fri 18-Oct-96 00:20 by kuong
Router(boot)>