Dell Inspiron 5559 blue tooth issues

I brought this Dell Inspiron 5559 with Service Tag: Express Service Code:  with windows 10 home Prelaoded from Costco.I checked all the ports that time except blue tooth one as i didn't had blue tooth speakers that time.Now i got a Bose sound link mini ll and i paired with laptop .but the audio breaks in between and its not having range even i stand between the speaker and laptop it breaks.But my I phone works superb with this speakers even in other room !!. I updated all the drivers and ran a diagnostics still issue is not resolved.I contacted customer care but they are not able to help me .Does anyone faced this type of issue ?I think its a hard ware issue and next time i won't buy nor recommend Dell .