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My Experience Troubleshooting Problem with Bluetooth on ASUS X540LA Laptop

I helped someone fix their Bluetooth problem (no Bluetooth device detected and no way to turn it on) and I am sharing my experience here so maybe it helps someone else. Firstly, what are some facets of troubleshooting?

  • Past and similar experiences
  • Google search
  • Contact hardware/software support
  • Ask around on social media
  • Post to forums
  • Read documentation
  • Look in settings (Software/OS/BIOS)
  • Reinstall drivers/software
  • Try different things

Of course if the internal Bluetooth is physically broken then a technician has to look at it and then you might have to consider using an external Bluetooth adapter. One of the first things I found was this posting/FAQ from Microsoft. The next thing I recommended for the person was to contact ASUS support

https://www.asus.com/support/Product/ContactUs/Services/questionform/?lang=en

Person tried the Windows Troubleshooter tool and that did not help. Normally there is an option under Settings > Wireless to turn Bluetooth on and off and that was missing.

My Experience Troubleshooting Problem with Bluetooth on ASUS X540LA Laptop (3)

My Experience Troubleshooting Problem with Bluetooth on ASUS X540LA Laptop (1)

We found two Bluetooth related services in Windows (search for Services from Windows Start or Windows + R > Run > services.msc). We restarted one and started the other. Both were set to manual.

My Experience Troubleshooting Problem with Bluetooth on ASUS X540LA Laptop (4)

My Experience Troubleshooting Problem with Bluetooth on ASUS X540LA Laptop (5)

From ASUS drivers and download we saw that this laptop can have a Realtek or Qualcomm Bluetooth adapter.

https://www.asus.com/Laptops/X540LA/HelpDesk_Download/

We figured out it was the Qualcomm because that is what was listed under device manager.

My Experience Troubleshooting Problem with Bluetooth on ASUS X540LA Laptop (2)

Uninstall it from device manager with the option set to delete driver files. Download driver and extract and run setup and then restart. Finally, Bluetooth was working again.

Found this video but we had already gotten it to work but it shows something we didn’t try and according some comments it worked for some but after restarting. Basically the services were set to automatic and the service log in info was reapplied. Set username to NT AUTHORITY\LocalService and leave password blank as it will be filled in automatically. Other things to note, maybe there is a hotkey on the keyboard to turn Bluetooth on/off for your laptop and also check in the BIOS to see what is there.

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