Boot error Catalyst 3850-48P-L

[Patrick25]

Hello,

Updated to Everest-16.6.9 now I lost total contact with the switch. I can't even connect to it via com port. Boots up. The fans go at it for maybe 5 seconds and then goes to system light. It's not even doing the boot test sequence.

Rebooted multiple times and Putty always shows blank screen... Tried other switched so I know it's not the cable.

TIA

[Leo Laohoo]

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@Patrick25 wrote:

Boots up. The fans go at it for maybe 5 seconds and then goes to system light. It's not even doing the boot test sequence.

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If you cannot see anything on the Console port then contact Cisco TAC and organize for an RMA.

[Patrick25]

Eneded up finding a forum that said to hold the mode button for 120seconds and now it works again. Thanks for the help

[marce1000]

    - A 'last try' attempt could be to execute a factory defaults reset, if that does not help as Leo said -> RMA.

 M.

[balaji.bandi]

adding to other comments...Power down completely wait for few minutes and connect console power on the check.

if still issue as suggest raise a TAC for RMA.