If you're unable to find the correct driver on the ASUS website or prefer a more straightforward approach, you can use the Device Manager to update the Bluetooth driver:
The root of the driver problem is a fundamental mismatch between hardware design and operating system evolution. The ASUS K53S typically uses a Bluetooth module integrated with a Wi-Fi card, most commonly from Azurewave (using Broadcom chips) or Atheros. The drivers supplied by ASUS for Windows 7 and 8 rely on a software stack that Windows 10 has significantly altered. When Windows 10 performs a clean installation, it often installs a generic Microsoft Bluetooth driver. While this generic driver works for many modern devices, it frequently fails to initialize the older Broadcom or Atheros chips properly, leading to error codes like “Code 43” (device reported a problem) or the Bluetooth adapter vanishing entirely after a system update. asus k53s bluetooth driver windows 10