Windows 10: Why does my Bluetooth not reconnect with my Win 10 PC when it comes back into range?

Updated Windows 10 Laptop: Dell XPS 15 9510Sony WH-1000XM4 HeadsetDoes anyone know why my headset will not re-connect to my laptop when I come back into range of the BT signal?Example:I get up from my desk to do something that is out of range for my headphones and it tones letting me know it disconnected from my PC. I come back a few minutes later and I have to Win + k then select my headset so it re-connects. I have no problem connecting when the headset is turned on while I am in range. When I power the headset on, both my phone and PC automatically connect to it. I checked around to see if

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Left computer for a second, come back, headphones won't reconnect, option to turn on bluetooth missing

just as title suggests, i was listening to music on my headphones, i walk out of bluetooth range, come back and they won't reconnect. try and turn bluetooth on, but the option is missing. already try updating drivers, restarting, and running the network
troubleshoter

 

Bluetooth in windows 10

If the op is using the pc listed in the system spec then the gigabyte z97x gaming 5 mobo does not have built in BlueTooth.

It also seems like the headphones did not come with a dongle so inless they buy one not much else can be done.

 

Bluetooth in windows 10

My computer specs are as listed in the profile. I think all of you guys are correct. I don't have built-in Bluetooth in mobo.

I contacted skull candy headphones and thy have told me if I do not have built-in Bluetooth, I would need a dongle which supports at least a2dp. I do not know what the heck that means. I have a feeling I would need more than a cheap dongle.

Anyone suggest some a2dp adapters. I searched but don't know what a2dp is so couldn't make a decision