Inspiron 5593 bluetooth suddenly not working

I have the same problem.  Windows 10 was restored from scratch, then the network card was replaced.  Now they want me to send it in for "repair" to replace the motherboard, and/or restore windows again so it can limp along and break again.  No, can't do that.  I think this is a simple communication problem and I don't need a motherboard to know that won't fix it either.  Anyway just wanted to share so you know you are not the only person with this problem.

I'll let you know how this is resolved if it is.

Spoke with Dell Escalation team today.  They are sending a replacement laptop, so I will give it another shot.

I'm facing same problem from the last one month..  I hope your laptop is working fine now.

If the firmware and other things like drivers are all updated according to the DELL SupportAssist then it means a few things and one of that is, The bluetooth card is physically compromised.

They replaced the network card without resolution.  Apparently it was a motherboard defect.  They sent me a new pc as an exchange and that resolved it.

I read someplace that Dell has a good reputation for quality, less than 5% which is better than most.  But every manufacturer has some problems and you are part of the 5%, as I was.  After I refused to accept another "fix", I was referred to the escalation team and everything changed.  They were very reasonable and agreed to replace the laptop.  So the first line technicians are not allowed to make policy exceptions, but the escalation team views it differently and has the ability to work beyond strict policy guidelines.

This is an ongoing issue with Qualcomm QCA9377 wifi/bluetooth adapters and is not limited to Dell.  I too have had the same problems on my Inspiron 15 (5593)..please see my post at:

https://www.dell.com/community/XPS-Desktops/XPS-8930-Qualcomm-QCA9377-Bluetooth-failures-2/m-p/7618858#M50617 

and the imbedded link therein.

Apparently there is only a workaround...no fix yet.

Here's a temporary solution I found somewhere if you want just to enable Bluetooth again.

1. In Device Manager, uninstall the Bluetooth it will be labeled Unknown USB Device (Device Descriptor Request Failed)
2. Disconnect power supply from laptop.
3. Shutdown laptop for at least 5 mins.  Don't restart! No need to drain battery.
4. Power on.
5. Bob's your uncle. Your Bluetooth device is active again.

Have had same issues using a Bluetooth mouse with my 5593. A Dell support person worked on it remotely for over a hour and finally got it working and blamed the mouse. This has been a notebook I wish that I had never purchased. It runs hot, which makes it throttle the CPU at times, the WiFi and Bluetooth issues as well as the flimsy chassis and poor screen quality even though its suppose to be a IPS quality screen. 

* Open the Device Manager
* Click arrow left of "Universal Serial Bus controllers"
* Look for a device descriptor Failed device with caution mark
* Right click the failed device and click "Disable device"
* Right click "Intel USB 3.0/3.1 eXtensible Host Controller"
* Click "Uninstall device"
* Using your laptop touchpad, click "Action"
* Click "Scan for hardware changes"
* Your Bluetooth icon should reappear and the failed device should be gone. At least for the moment. Remember to Disable device BEFORE you uninstall the device

I tried the above operations but didn't work for me.

@Sagar Saini 

Try my solution posted on 07-08-2020 12:57 AM on this same thread.

Thanks for help. I already got this resolved by doing a hard shut-down referred on https://answers.microsoft.com/en-us/windows/forum/all/bluetooth-disappered-from-device-manager-with/fd246f79-c31c-40a2-a0a1-5660e0e07cfc?page=3

That was a temporary solution .....some complained that the problem came back after 1-3 days....i can confirm because i too had the same problem returned after shutdown fix......then i solved my problem permanently by the method i described above...

but if it fixed your problem...i hope it is permanent