Information

Can you give us some more details?

You could try to see if there's any mention of adapters in the kernel boot messages with something like

dmesg|grep -iE "b(lue|t)"

and see if it lists anything interesting.

The other thing, if that doesn't turn up anything, is to look for unknown devices, usually USB devices, so you could check a few listing like

dmesg|grep -i unknown
//or, more directly
hciconfig

Post some findings here when you get them.