Hello、
If both your HP mouse and Surface Mouse cannot connect, the issue is likely with Windows itself rather than the mice.
Please try the following:
- Perform a Windows repair installation Download the repair version of Windows from Windows Update and run a repair install. This keeps your files but repairs damaged system components.
Fix issues by reinstalling the current version of Windows
- After the repair is complete, install the latest drivers from your PC manufacturer Chipset driver Bluetooth driver
- (Optional but recommended) Update the BIOS Install the latest BIOS/UEFI firmware from your PC manufacturer if available.
Restart the PC and try pairing the mice again.
If Bluetooth still does not work after these steps, the Bluetooth adapter may be faulty.
Finally, what is the exact manufacturer and model of your PC?