Hi. Can you please tell me what operating system you're running on your laptop? Windows? Mac? Which version?
Typically it's as simple as choosing the device to which you want to pair your laptop. And if asked for a code, it's typically 0000 unless you've set something in particular or the owners manual says the default is something else.
Please describe as best you can the exact steps you are taking to attempt to pair your laptop with your speaker and what error message you receive.
Well it sounds like you've covered the basics. And since your device shows up in the devices and printers list, it even sounds like you have successfully paired it with your laptop. So now I'm wondering if you need to select the right output device in Windows.
Try going into your control panel and navigate to Hardware and Sound -> Sound -> Manage Audio devices. You should get a window that looks similar to the one I attached with YOUR audio devices. Do you see your bluetooth speaker in there? If so, try selecting it and see if you get sound.
OK. Well you've covered the obvious it seems. I'm going to open this back up to other experts that might have specific experience with your Bose speaker.
This is Richard, I should be able to assist you.
In the same window in the attached photo you provided, try right clicking in the space, and choose 'show disabled devices'
And let me know what devices(if any) show up.