ASUS officially stopped supporting the K53S after Windows 8. The official ASUS support page only offers drivers for Windows 7 (32/64-bit). If you try to install these directly on Windows 10:
Ensure your wireless/Bluetooth physical switch or keyboard hotkey (usually Fn + F2 ) is turned on. asus k53s bluetooth driver windows 10 extra quality
To verify that the Bluetooth driver has been installed correctly, follow these steps: ASUS officially stopped supporting the K53S after Windows 8
: When functioning, the Bluetooth module (often Intel or AzureWave/Realtek depending on the sub-model) provides standard audio quality suitable for basic headphones, though it may lack modern low-latency codecs. How to Get the Best Result follow these steps: : When functioning