Kanguru micro pro will not turn on..

please post this again as a comment to the previous thread since it's
relevant.

Is it possible that the computer is using the mp3 only as a flash drive? if so it's not unlikely that a defect is causing it to shut down when on it's own.

I would do a firmware update, assuming it will reset some things and put them to order.

but you really should take it to the shop if there's a chance for a warranty covering this

Good luck

Turn Hold On & Off teice, Than Hold Play For 6-10 Seconds, it should reset