Re: Soundlink Color II will not power up or charge
I just bought a new SoundLink Color Bluetooth® speaker II (black) and had this problem almost immediately. And since these posts are all quite recent, perhaps there is a problem in Bose quality control and more folks will need this good answer. Thanks for posting the appropriate reset process and I, too, think it should be in the Bose documentation.
Here's what happened in my case: Unit arrived, I plugged it in to charge and the green light came on after a while. I used it with my laptop and my phone to test (probably for a couple of hours). Then I offered to help a group I am in hear some music so I took it out "in public". Before the meeting, it paired with the host's laptop and played a test sound. Leaving it on, I moved it to the center of the room. It was perhaps an hour later when the host was ready to make use of my new speaker that it would not work (embarrassingly). It did not respond to any buttons and no lights ever came on. It just went into deep hibernation for no reason at all.
Thanks to Mohsin, I was able to bring my speaker back from the dead. I will start using it and add another post if it happens again, but I now have Hope.