Thanks for posting.
I appreciate the details of what you have tried. Are you using the charging cradle? If yes, I would suggest trying to bypass it and plug directly into the speaker.
Let me know if that helps.
Joel - Community Support
Hi- I am having the same issues with my soundlink II- it blinks once and then dead. tried all outlets and direcylt into the laptop. DEAD
Thanks for responding. If you have tried all resetting and troubleshooting tips and with different cables and you are still having this issue, I would reach out to your local Bose support team for assistance.Here is a link you can use. Click on your country, scroll down until you see "Contact Us".
Tony G - Community Support