Bluetooth icon and capabilities gone

1803 seems to hate Broadcomm Bluetooth.

You will receive an error when attempting to reinstall.

For My Wireless 370 card I had to download the Driver.

Then Open WIN32 or WIN64 in Dell Drivers RXXXXX

And Run 2 programs.

Microsoft Recommends

 Refer (Make older programs compatible with this version of Windows)

http://windows.microsoft.com/en-US/windows-8/older-programs-compatible-version-windows 

 This is worthless however and does not work.  They now hate Widicomm and Broadcomm.

The fix for some is to install the updated BIOS, then in BIOS, disable the bluetooth radio, save and exit.

Load windows, then reboot to BIOS again and enable the bluetooth radio. Next time logging into Windows, the bluetooth was back and working.

Option 2

 In your case this is different.

Killer Wireless AC 1525 1535 1435 Bluetooth Driver
This package contains the Bluetooth driver for
Killer Wireless-AC 1525, 1535, 1435 cards and is supported on Inspiron ,
XPS and Alienware models that run the Windows 10 (64-bit) operating system.  This package fixes the Bluetooth driver pairing vulnerability CVE-2018-5383 and the event log error issue after wireless driver is uninstalled.  This package contains certified drivers for Windows 10 Creators Update (RS3) and for Windows 10 summer Creators Update (RS4)  10.0.0.714    9/25/2018    WT64A

http://downloads.dell.com/FOLDER05079031M/1/Killer-Wireless-AC-1525-1535-1435-Bluetooth-Driver_FWRVT_WIN_10.0.0.714_A11.EXE

FOR WIRLESS 370 Card

Step 1.
Download the Bluetooth Drivers.

https://downloads.dell.com/FOLDER95291M/1/R205174.exe

Step 2.  
Goto C:\Dell\Drivers\XXXXXX\RXXXXX

Step 3
Open the WIN64 directory for 64 bit

Open the WIN32 directory for 32 bit

Step 4 find the File

BtwMM.EXE and right click it run as adminstrator.

Step 5
Find Inst.EXE and right click run as adminstrator.

This will reinstall the WIDICOMM stack and the Bluetooth device

will miraculously re appear in device manager.

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@joefalc wrote:

Hi guys!

Is there anyone other than me who has an issue with bluetooth cxn after the update to Bios 12?

I have x51 r2, win 10 64 bit ver 1803. The bluetooth icon is missing. Device mgr shows nothing for bluetooth. But i was connecting BT devices before....

Any suggestions?

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Remove WiFi/BT mini-card and boot into Windows. DeviceManager should be clean.
Shut-down, re-insert mini-card, and boot up. See if it now PnP detects in DeviceManager again.