First of all, restart your computer and see if the issue is fixed or not. If the problem was occurring due to a minor glitch, it will be fixed automatically after restarting your computer. Also, ...

When your Bluetooth mouse suddenly stops working and the entire Bluetooth functionality disappears from your PC, no toggle switch, no Bluetooth in Device Manager, it usually indicates a deeper issue ...

If you use a wireless mouse, its batteries might be low. Replace the batteries and check if this helps. If this does not work, you can use a wired mouse. The driver of your gaming mouse might have ...

I have a USB IBM optical scroll mouse. Previously I used an adapter so I could plug it into a PS/2 port. Somehow the adapter got a bent spoke, so I've been actually plugging it into a usb port instead ...