I acquired two Cisco 3750 switches from another part of my organization.
I was able to complete the standard password/config reset procedure on one without any issues — boot it, put it into express config mode, telnet in, reset the passwords, etc.
The second one doesn't ever boot to the point where it displays anything on the console. When power cycled, the 'SYST' light flashes green a few times, then comes on a solid green and stays lit. None of the other lights ever flash or light up. Holding down the 'MODE' button for up to 30 seconds produces no noticeable effects. Nothing ever comes out on the console.
Since I was able to configure the first one without any problems, I know my connectinon is good — console port configured right, good cable, etc. Is this just a hardware problem with the switch? Is there any way I can recover from this and get the switch back into a state where I can configure it?
Best Answer
If booting while MODE is held down doesn't produce any output via the serial console, and you have the right cable and terminal settings for your device (which you should be able to find from cisco), then I would tend to blame a hardware issue.