I came across this days upon a frustrating problem. Whenever I turn on the WiFi, my Bluetooth stops working properly. For example, I have a Bluetooth mouse, if I turn on the WiFi (not connecting to any wireless access points, even when I turned off every single WiFi capable device with which might interfere) my cursor just freezes and becomes unresponsive. After I turn off the WiFi, my mouse starts working straight away. It applies to all kinds of Bluetooth connections, like different smartphones. Can't establish a connection with any Bluetooth capable device. It's weird, because I didn't have such problems before. Hope you can help me, I really don't know what to do. I tried updating drivers, install the drivers from my manufacturer's site, rebooting laptop, turning off and on the Bluetooth / WiFi. I have a Lenovo IdeaPad 100-15iBD, Windows 10 up-to-date
battled with this for quite a while before working it out. From what I understand the Bluetooth and WiFi are both on the same piece of hardware and after updating to Windows 10, I think they were both defaulting to the same antenna.
FIX: Move the WiFi to use the AUX antena rather than allow the auto selection, you can do this as follows
Right click start and select DEVEICE MANAGER
Open network adapters
Right click Realtek RTL87xxxx wireles LAN 802....
Antena Diversity Selection
Move from Auto to AUX (if this doesn't work trying Main is probably worth a shot)
If it works for a bit and then stops again, under the same area switch off low power usage under the power management tab.
I have had the same problem with a newly bought Bluetooth headphones and it was driving me crazy. My machine is a Dell XPS 9550, on Windows 10. I know it's different from yours, but since I couldn't find any good links online to solve my problem, I thought it's worth sharing it here for others to try it out.
As others have mentioned Bluetooth uses 2.4Ghz channels while WiFi can use both 2.4 and 5.0 Ghz channels. So, if they are both using the same frequency, they are bound to interfere. The solution is usually to connect to put WiFi on a 5 Ghz channel with your router, which I did, but it didn't solve the problem completely. I updated/rolled-back drivers for both Wireless and Bluetooth cards on my PC multiple times to no avail. This is till I found CF5's answer to this question. His suggestion didn't work for me, but I looked at other options and I found that there is one under the name Bluetooth Collaboration. As it turns out, with this option ON, the Wireless card uses Bluetooth capacities to make WiFi connection smoother. Disabling this option was what worked for me in the end, after a week full of frustration.
Note that I was already connected to a 5 Ghz connection and it was enough on it own. I would still get disconnected from the Internet every minute or so. Now, it's been over a day and I haven't had any WiFi connection issues anymore and my headphone is also working perfectly ever since.
Hope this will come handy for you and others.
Bluetooth sends signals over a 2.4GHz radio frequency. This becomes tricky when other nearby devices are also using that frequency. Wi-Fi is perhaps the biggest and most problematic example, as are other Bluetooth receivers and devices, which can interfere with one another. That said, even microwaves can cause Bluetooth interference with your devices. So can 2.4GHz phones, wireless speakers, external monitors, baby monitors, and really any wireless device that uses Bluetooth technology. There are a few things you can try. For example, remove all barriers, this means no brick walls between you and your devices, and definitely no metal desks. Since bluetooth communicates on 2.4GHz, try changing your router channel to 5GHz, this will help a lot, but you need to make sure that your wi-fi devices all support 5GHz operation. Lastly, try moving closer to the router.
After all the research I made about this topic I found only one working solution:
The wifi channels won't give you permanent solution if you change them.
I bought a small bluetooth antena (usb dongle) for 10€ and then I switched off the internal bluetooth adapter. (Should be disabled in Device Manager).
The issue comes from the fact that Wifi and Bluetooth waves are recived by the laptop from the same anthena.