A greyed-out Bluetooth control does not, by itself, prove the adapter has failed. Windows may be unable to detect the hardware, or the problem may involve a driver, settings, a system service, or a recent update. Start with a full shutdown, then check whether the adapter appears in Device Manager and update its driver. If Windows still cannot detect it, check your PC maker’s support information for your exact model.
First, identify what is greyed out
“Bluetooth is greyed out in Device Manager” can describe different symptoms: the Bluetooth category or adapter may be missing, an adapter may appear but be unavailable, or the Bluetooth control may be missing or greyed out in Settings or Quick Settings. The recovery steps depend on which one you see.
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- Bluetooth control missing or greyed out in Settings or Quick Settings: Windows may have encountered a hardware detection error, or the driver may be missing. Microsoft notes that some PCs do not have Bluetooth hardware at all. Microsoft’s missing-Bluetooth guidance explains these possibilities.
- Adapter listed in Device Manager but Bluetooth unavailable: Check the adapter’s driver, then consider reinstalling it if the earlier steps do not restore Bluetooth.
- No adapter listed: Check your PC’s specifications and manufacturer support information before concluding the hardware has failed or buying an add-on.
Microsoft lists settings, outdated or incompatible drivers, stopped system services, hardware problems, and recent Windows updates among possible causes. The appearance of a greyed-out control alone does not identify which cause applies.
Try a full shutdown before changing drivers
For a missing-Bluetooth problem, Microsoft recommends a complete shutdown and power-on—not Restart—as an early recovery step:
#1 Best Overall
- Bluetooth 5.4 + Broad Compatibility - Provides Bluetooth 5.4 plus EDR technology and is backward compatible with Bluetooth V5.3/5.0/4.2/4.0/3.0/2.1/2.0/1.1.
- Faster Speed, Extended Range - Get up to 2x faster data transfer and 4x broader coverage compared to Bluetooth 4.0 — perfect for smooth audio streaming and stable connections.
- EDR and BLE Technology - This Bluetooth dongle is quipped with enhanced data rate and Bluetooth low energy, UB500 has greatly improved data transfer speed and operates at the optimal rate of power consumption
- Nano-Sized - A sleek, ultra-small design means you can insert the Nano Bluetooth receiver into any USB port and simply keep it there regardless of whether you are traveling or at home
- Plug & Play with Free Driver Support - Plug and play for Windows 8.1/10/11 (internet required). Supports Win7 (driver required and can be downloaded from website for free). Download the latest driver from TP-Link website to utilize Bluetooth 5.4
- Hold Shift while selecting Start > Power > Shut down.
- After the PC has turned off, wait one minute.
- Turn the PC on and check Bluetooth again.
This sequence is Microsoft’s specified step for the missing-Bluetooth case; it is not a general claim that every greyed-out adapter will be fixed by shutting down. See Microsoft Support’s instructions.
Check Bluetooth settings and whether the PC has an adapter
On Windows 10, check that Airplane mode is off. On Windows 11, check Quick Settings and Settings > Bluetooth & devices where those controls are available. If the Bluetooth setting is absent, that can mean the PC has no Bluetooth adapter or that its driver is not installed; it does not establish a hardware failure. Microsoft’s general Bluetooth troubleshooting guide notes that some devices do not have Bluetooth.
Rank #2
- INSTANT BLUETOOTH ACCESS: Bluetooth dongle adapter receiver for PCs converts non-Bluetooth devices into Bluetooth-capable with simple USB connection
- WIDE COMPATIBILITY: Supports Bluetooth 5.4 and is backwards compatible with Bluetooth 5.3/5.2/5.1/5.0/V4.2/4.0/3.0/2.1/2.0/1.1; ONLY works with Windows 8.1, 10, and 11
- MULTI-DEVICE CONNECTION: Connect up to 6 devices simultaneously; Not compatible with all other operation systems e.g. Mac, Linux, Chrome, Unix, Playstation(PS), Windows 7 and below; Nano bluetooth receiver can be plugged in via any standard USB port
- ENHANCED PERFORMANCE: EDR and BLE technology offers enhanced data rate/transfer speed and low energy consumption
- SYSTEM REQUIREMENTS: Not compatible with all other operation systems e.g. Mac, Linux, Chrome, Unix, Playstation(PS), Windows 7 and below; Disable any built-in Bluetooth of the device before use this product, refer to the user manual for detail
Look up the exact PC model in its specifications or the manufacturer’s support site to confirm Bluetooth capability and find model-specific drivers. If the PC has no built-in adapter, check compatibility with your model and Windows version before considering an external Bluetooth adapter; Microsoft’s guidance does not certify any particular accessory.
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Find the Bluetooth adapter in Device Manager
- Open Device Manager.
- Expand Bluetooth, if that category is present.
- Look for the adapter. Its name may contain “Bluetooth” or “Radio.”
- If it is not under Bluetooth, check Other devices for a device that may need a driver.
If no likely adapter appears, compare the result with your PC’s specifications and manufacturer support information. A missing listing alone cannot tell you whether the PC lacks Bluetooth, the driver is absent, or Windows is not detecting the hardware. Microsoft describes these checks in its missing-Bluetooth steps.
Rank #3
- Upgraded Bluetooth 5.3 Adapter: This bluetooth adapter for pc uses the latest upgraded Bluetooth 5.3 BR+EDR technology, greatly improves the stability of the connection data transfer speed, reduces the possibility of signal interruption and power consumption.
- Up to 5 Devices Sync Connected: UGREEN Bluetooth dongle for PC supports up to 5 different types of Bluetooth devices to be connected at the same time without interfering with each other, such as Bluetooth mouse/keyboard/mobile phone/headphones, etc. If Bluetooth audio devices of the same type (such as speakers/headphones) are connected, only one device can play music.
- Plug and Play: The Bluetooth adapter is developed for Windows systems only and does not support other systems. No driver installation is required under Windows 11/10/8.1. NOTE: Win 7, Linux and MacOS System are NOT supported.
- Mini Size: An extremely compact Bluetooth stick that you can leave on your laptop or PC without removing it.The compact size does not interfere with other USB ports. Convenient to carry, no space occupation.
- What Can I do if the Bluetooth adapter can not work?: Ensure there are no other Bluetooth devices installed on the computer. If there are, disable all existing Bluetooth devices in "Device Manager", then insert the adapter and try again. (For detailed information please read the user manual)
Update the adapter driver
If the adapter appears in Device Manager, try Windows’ automatic driver search:
- Right-click the Bluetooth adapter.
- Select Update driver.
- Choose the option to search automatically for drivers and follow any on-screen instructions.
- Check Windows Update for available updates.
If Windows does not find a driver, use the PC manufacturer’s support site and search by the exact model. A driver intended for a different model may not be suitable. Microsoft recommends checking the manufacturer’s site when Windows cannot find the driver; see its Bluetooth troubleshooting guidance.
Rank #4
- This Bluetooth adapter for PC utilizes the latest Bluetooth 6.0 EDR technology, delivering faster data transfer speeds, seamless high-quality audio/video streaming, and efficient large-file transfers.
- Up to 5 Devices Sync Connected: This Bluetooth dongle for PC supports up to 5 different types of Bluetooth devices to be connected at the same time without interfering with each other, such as Bluetooth mouse/keyboard/mobile phone/headphones, etc. Note: If Bluetooth audio devices of the same type (such as speakers/headphones) are connected, only one device can play music.
- Ultra-High Data Transfer Speeds: With Bluetooth 6.0 technology, this bluetooth dongle will bring us a faster speed experience. And Bluetooth 6.0 is backward compatible with Bluetooth5.4/5.3.
- EDR and BLE Technology - This Bluetooth dongle is equipped with enhanced data rate and Bluetooth low energy, it wil optimize energy.
- Plug and Play: The Bluetooth receiver is developed for Windows systems only and does not support other systems. No driver installation is required under Windows 11/10/8.1. NOTE: Linux and MacOS , Win 7 System are NOT supported.
Reinstall the adapter only if it is listed and still unavailable
If the Bluetooth adapter appears in Device Manager but Bluetooth remains unavailable after the checks above, uninstalling and letting Windows attempt to reinstall it is a possible recovery step:
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minute- In Device Manager, right-click the Bluetooth adapter and choose Uninstall device.
- Restart the PC so Windows can try to reinstall the driver.
- If the adapter does not return, open Device Manager and select Action > Scan for hardware changes.
Follow Microsoft’s instructions for reinstalling a Bluetooth device. This is a recovery option for an adapter that is present in Device Manager, not the first step when no adapter is listed.
Best Value
- Bluetooth 5.4 dongle: Applies the latest Bluetooth 5.4+EDR technology, compatible with Bluetooth 5.3/5.2/4.2/4.2 LE/4.0/2.1+EDR, and supports Dual mode (BR/EDR+ Bluetooth Low Energy) to achieve low energy consumption and high speed. Quick response and better anti-interference.
- Plug & Play: USB wireless Bluetooth is not limited by network and location, no need to install drivers, just plug the USB wireless adapter into your computer, you can use it directly. You can use the Bluetooth function at any time. Greatly improve your work efficiency and save your time.
- Long Range Bluetooth Adapter: The USB Bluetooth 5.4 dongle uses Class 1 radio technology, equipped with extra long antenna, and the transmission range in the open area can reach 500ft/150m, Bluetooth connections are no longer affected by distance. Note: The actual transmission range will be affected by physical obstructions and wireless interference.
- Fast Transmission Rate: This upgraded Bluetooth 5.4 adapter features EDR technology and Bluetooth Low Energy (BLE) configuration up to 3Mbps, which greatly improves transmission rates and reduces the loss of transmission efficiency due to interference in the 2.4GHz band. Enables fast, no delay wireless data connections between your computer and Bluetooth devices.
- System Support: The upgraded Bluetooth 5.4 dongle has a wide range of applications. You can connect up to 5 devices at the same time using Bluetooth wireless. Such as Bluetooth speakers,keyboards,headsets,mice, and Bluetooth printers,etc. Only supports Windows 11/10/8.1, Not compatible with Mac OS, Linux,car stereo systems,XBOX,ps4 or TVs.
When to contact the PC manufacturer
If Windows still cannot detect or enable Bluetooth, contact the PC maker with the exact model and describe what appears in Device Manager. Ask for model-specific Bluetooth driver guidance and, if applicable, firmware instructions. Microsoft notes that manufacturer drivers or firmware can matter for some Bluetooth problems. Do not apply BIOS or UEFI changes based on generic instructions; use only the manufacturer’s guidance for your model.
If you are using Windows 10, Microsoft support ended on October 14, 2025. Microsoft says free software updates through Windows Update, technical assistance, and security fixes are no longer provided after that date. The Bluetooth troubleshooting pages cover Windows 10 and Windows 11, but that coverage does not change Windows 10’s support status. Details are on Microsoft’s Bluetooth troubleshooting page.
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