Windows 10: Bluetooth is missing from Settings. In trying to restore, I am trying to restart Bluetooth...

Bluetooth has disappeared from the Action Center and from the Settings menus. I was able to locate it under Device Manager and noticed that BLuetooth support services was set to Manual.In trying to change that to Automatic, I get a message that "the parameter is incorrect." Yet the Parameter field is empty. So Bluetooth is still not working.

:)

 

Restoring a missing driver (Bluetooth in my case)

I'm running Windows 10 Version 20H2, Build 19042.985. l've accidentally lost one of the Bluetooth drivers while trying to connect to my headphones, There are many posts about the "Bluetooth failed to connect" problem and many suggested remedies, most of which require uninstalling or deactivating a Bluetooth device.
In Device Manager, if you click on the Bluetooth device, you're supposed to see five subdevices: Bluetooth Device, Intel Wireless, Broadcomm, Microsoft Bluetooth Enumerator. and Microsoft Bluetooth LE Enumerator. Most of the suggested remedies for the did-not-connect problem require disabling or uninstalling a one of these devices and restarting.

In my flailing around for a solution to my problem, I tried a third alternative which apparently exists only for the Broadcomm device: deleting the driver. After doing that and restarting, I had not gotten a connection, but the third subdevice, the Broadcomm one, had vanished, I had also lost several other devices that had shown up previously. Restarting ordinarily restores missing components, but in this case it did not. Try as I might, I could not get the Broadcomm device to come back. Rebooting did not help.

So where can I find the missing driver, and how can I reinstall it?

 

No bluetooth after system restore

Thank you for your reply.

I mean I have used a Windows system restore point. I tried restoring bluetooth with commands in CMD (sfc/scannow; DISM /Online.....) and by updating and uninstalling devices in the device manager. Update did not work. Uninstalling bluetooth devices made Bluetooth disappear out of the hidden devices list.
All my steps I took worked but did not change anything in my bluetooth device list.

I am using the bluetooth of my mainboard. MSI Z370M Gaming Pro AC
My guess would be, that disabling the bluetooth network adapter before using a system restore point, disabled Bluetooth after using the system restore point.

In the device manager I get this message in the USB Device list for a unknown USB Device:
Windows has stopped this device because it has reported problems. (Code 43)
A request for the USB device descriptor failed.

 

Bluetooth Technology Gets Faster With Bluetooth 3.0

From its annual All Hands Meeting in Tokyo this week, the Bluetooth SIG formally adopted Bluetooth Core Specification Version 3.0 + High Speed (HS), or Bluetooth 3.0. This latest iteration of the popular short-range wireless technology fulfills the consumers' need for speed while providing the same wireless Bluetooth experience – faster. Manufacturers of consumer electronics and home entertainment devices can now build their products to send large amounts of video, music and photos between devices wirelessly at speeds consumers expect.
Bluetooth 3.0 gets its speed from the 802.11 radio protocol. The inclusion of the 802.11 Protocol Adaptation Layer (PAL) provides increased throughput of data transfers at the approximate rate of 24 Mbps. In addition, mobile devices including Bluetooth 3.0 + HS will realize increased power savings due to enhanced power control built in.


"Like Ricky Bobby in Talladega Nights, this latest version was 'born to go fast,' said Mike's Blog, Ph.D., executive director of the Bluetooth SIG. "Utilizing the 802.11 radio was a natural choice as it provides efficiencies for both our members and consumers – members get more function out of the two radios they are already including in devices, and consumers with Bluetooth 3.0 + HS products will get faster exchange of information without changing how they connect. We are excited to expand the possibilities of the PAN."

This newest version of Bluetooth technology builds on the inherent qualities of the current 2.1 + EDR version, including Simple Secure Pairing and built-in, automatic security. And as with all versions of theBluetooth specification, v3.0 + HS provides developers, manufacturers and consumers with the benefit of backwards compatibility, enabling both the expansion and enhancement of this technology with every new specification release. Once products reach the market, the easiest way for consumers to learn which devices are compatible with other Bluetooth enabled devices is to visit the Bluetooth Gadget Guide.

Applications
With the availability of Bluetooth version 3.0 + HS, consumers can expect to move large data files of videos, music and photos between their own devices and the trusted devices of others, without the need for cables and wires. Some applications consumers will experience include:

• Wirelessly bulk synchronize music libraries between PC and music player or phone
• Bulk download photos to a printer or PC
• Send video files from camera or phone to computer or television

Availability

The Bluetooth SIG's formal adoption of the specification is only the first step in the product lifecycle. News out today from wireless chip manufacturers and Bluetooth SIG member companies Atheros, Broadcom and CSR shows the second step – getting silicon solutions to device manufacturers – is already underway. End products for consumers are expected to be in the market in 9 to 12 months.

Technical Specifications
This new specification release includes several major enhancements (learn more here - page requires member login):

• Generic Alternate MAC/PHY (AMP)
• 802.11 Protocol Adaptation Layer (PAL)
• Generic Test Methodology
• Enhanced Power Control
• Unicast Connectionless Data

Source: Engadget