Windows 10: Accidentally removed blueooth device from device manager

HelloI accidentally removed/uninstalled the Bluetooth antenna Mediatek MT7921 on my laptop Acer Swift X - SFX14-41G. I then downloaded the driver from Acer and installed it, but restarting the computer doesn't fix the problem. Any ideas what I can do to fix this?This is what I had installed prior:This is what the device manager looks like now:And as you can see, there is no Bluetooth option anymore:

:)

 

No hardware listed in Device manager?

I don't konw whathappend but in Device manager and in my Network connections there is nothing where there used to be a Modem listed and all my hardware in Device Manager. What happend and how do I fix this?

 

Device Manager Un-Hiding Hidden Devices

When you connect a plug and play device, Windows Plug and Play manager detects it, finds and installs the driver. Device Manager lists the device with a solid icon.

The driver is only removed when you uninstall the device, not simply by disconnecting the device. When the device is disconnected, its driver is still installed. By default, Device Manager only displays connected devices. When you show hidden devices, note the Bluetooth icon you see is semi-transparent (not opaque). That indicates a "non-present" device. Sometimes also called a "ghost" device. The driver is still installed but the device is not currently detected (i.e. not connected).

Device can be disconnected when

• Device unplugged (e.g. removing a USB device)
• Turning a device OFF
• Disabling the device in BIOS (then windows won't detect it) or
• Device failure

So

• Check BIOS as suggested
• Check board connections
• Can b/t be turned off by a switch? or keyboard combination?

Also possible the b/t h/w failed

 

Remove Devices

Hi,



Thank you for writing to Microsoft Community Forums.



I understand that you are facing issues while removing the device from your Microsoft account as it keeps popping back after removing.



It could be possible that the device was using OneDrive with the same Microsoft account and that might be the reason you are able to see the device listed under your profile. I would suggest you to remove the device from OneDrive
and see if that helps.



You can follow the steps to remove the device from OneDrive.

1. Login to
   https://onedrive.live.com.
2. Now on the left hand pane click on PC’s.
3. Now click on the devices that are listed under PC’s and on the right hand side click on
   Remove PC.

If the issue persists, please get back to us with the results of the troubleshooting steps to assist you further.



Regards,

Prakhar Khare

Microsoft Community – Moderator