I tried to load IOS from TFTP server but tftpdnld command was not found. Because of this, I changed console speed to highest possible (115200) and transfered IOS image with xmodem command. It went OK and I restarted system. The IOS booted but I didn't have a password so I had to bypass it. I booted in ROMMON mode and entered command confreg 0x2142 and was given a message that I need to restart system for a changes to take effect. It is important to say that this worked a few hours before and all went well. Now it didn't, the system rebooted but the output was incomprehensible as shown below.

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Please help