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Featured blog article:

‎11-03-2026 05:06 AM

HP Recommended
Product: hp pavillion g4 nootebook pc
Operating System: Microsoft Windows 10 (64-bit)

my laptop bluetooth isnt suddenly working it shows it isnt connected no on buutton nor opp code 45 help plz its qualcomm atheros Ar9485 802.11b/g/n wifi adapter if its a drive problem plz recoommend some drives

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1 REPLY 1

‎11-03-2026 09:41 AM

HP Recommended

Hi @dihaw,

Code 45 means Windows can't detect the device at the moment. Note that the Qualcomm Atheros AR9485 is a Wi-Fi-only adapter, so Bluetooth would come from a separate device or driver.

  1. Shut down (not restart), unplug the charger, hold the Power button for 30 seconds, then turn the laptop back on.
  2. Check that Airplane mode is off and Bluetooth is turned on in Settings > Bluetooth & devices.
  3. In Device Manager, click View > Show hidden devices, uninstall the greyed-out Bluetooth entries, and then click Action > Scan for hardware changes.
  4. Download the Bluetooth/Wi-Fi drivers for your exact model from HP Software and Driver Downloads.

Please share your laptop's full model/product number so we can point you to the exact driver.

I am proudly Mexican, a Computer Systems Engineer and an HP Community volunteer (not an HP employee).
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