In some cases, booting from a "Live USB" of Ubuntu, turning on Bluetooth there, and then rebooting back into Windows has been known to "kickstart" the radio hardware. HP Support Community Long-term Solutions
The RT3290 is notorious for hardware failure or becoming "invisible" on Windows 10 builds past version 1803. If drivers do not fix the issue, consider: HP Support Community ralink rt3290 bluetooth driver for windows 10 64 bit ralink rt3290 bluetooth driver windows 10
Ralink RT3290 Bluetooth adapter is a legacy combined Wi-Fi and Bluetooth card that frequently experiences significant compatibility issues with modern versions of Windows 10 In some cases, booting from a "Live USB"
The most stable driver developed specifically for Windows 10 is version 11.0.761.0 BIOS Toggle: If the adapter is missing from
, and choose "Browse my computer for drivers" to point to the location where you extracted the driver files. BIOS Toggle:
If the adapter is missing from Device Manager, restart your PC, enter the