Did your computer come with this wireless adapter by factory? If so, we recommend that you contact Dell* first and if they have any updates that might help you resolve this issue. Alternatively, you are welcome to try our latest driver version (18.12.1) for the Intel® Dual Band Wireless-AC 3160 found in this link: Intel® PROSet/Wireless Software for Windows® 10 - As for your headphones, if possible check with the manufacturer and see what Bluetooth* profiles it supports.
The laptop has the adapter installed in the hardware by Dell, but since it has Intel chipset, Dell asked me to contact Intel. I installed the latest driver you suggested but the problems still persists.
The bluetooth adapter on the laptop itself seems to be failing as indicated by the event logs I pasted in my previous message.
The headset shows up as WST580BT-C on Manage Bluetooth Devices window of Windows 10, but I don't know manufacturer name of the headset. The headset worked fine for 1.5 years with Lenovo T61 laptop running Windows 7, but chipset was different.
Are there any diagnostic programs from Intel or any debug images for driver from Intel that I can try, to out to find the root cause for the problem?
We recommend that you always use the drivers provided by your computer manufacturer first. Here is the link for the manufacturers in case you need it: Computer Manufacturer Support Web Sites - As as second option, you can try the generic Bluetooth* drivers found in our download center: Intel® PROSet/Wireless Software for Bluetooth® technology for Windows 8.1* 64-bit (WP)
It would be important to check what Bluetooth* profiles are supported by the headset and see if they are supported by the Bluetooth* on the adapter.