Windows 10: How do I make bluetooth work again after windows reinstall?

I have a dell inspiron 15z 5523. I had upgraded it to windows 10 a few years back. I had to reinstall windows 10 because it got corrupt while resetting the pc. So I did the installation process, first created the bootable media then installed windows 10. But bluetooth was not working on the laptop. So I tried running the troubleshooter and it shows the device doesn't have bluetooth and that I should use an external adapter. And bluetooth worked before I reinstalled windows.

:)

 

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

 

Bluetooth in windows 10

USB-BT211 Mini Bluetooth Dongle - Support

• Support A2DP for Wireless Stereo Music Playback

Edit: This is a dongle with old BT version I see now, but I'm sure you can find a Asus BT4.0 version.

Edit2:

@aasim1111 I have this one, it doesn't show that it supports A2DP in the specs but I think it'll work, otherwise send a mail to Asus and ask.
USB-BT400｜Adapters｜ASUS Global

 

Bluetooth is not working — troubleshoot claims I don't even have it

I have done all the following steps:

- installed bluetooth driver from manufacturer
- hit windows update
- updated / uninstalled bluetooth items listed in Device Manager and restarted the PC
- updated / uninstalled USB drivers listed in Device Manager and restarted the PC (USB drivers automatically came back but not bluetooth)
- turned on and restarted all bluetooth support in services.msc
- conducted bluetooth troubleshooting
- conducted hardware troubleshooting