|Laptops have to be compact so I'm sure that someone fiddling arouind inside could mess things up. It could be they just forgot to reconnect the internal speakers. I'm not sure how the bluetooth is connected but check in cmos/bios setup. It may be that is something that can be enabled or disabled there. If it's disabled that would explain why it's not working.|
And you're sure that device manager shows no yellow question marks or exclaimation marks indicating a hardware problem?
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