Try these steps in order:
- Check power on the mouse
- Make sure the mouse has batteries installed correctly.
- If it is rechargeable, charge it with the USB cable that came with it.
- Turn the mouse on and check whether any light appears.
- Reconnect the USB receiver
- Unplug the wireless receiver.
- Wait about 10 seconds.
- Plug it back into a USB port.
- Try a different USB port
- Move the receiver to another USB port on the laptop.
- If a USB hub, dock, port replicator, or KVM switch is being used, remove it and connect the receiver directly to the laptop.
- If possible, test ports on both sides of the laptop.
- Check for a reset or sync button
- Look on the bottom of the mouse for a Reset button.
- Some wireless devices also have a reset button on the USB receiver.
- Pressing it disconnects and reconnects the wireless connection.
- If the mouse has a sync button, use it to resync with the receiver.
- Reduce interference
- Keep the mouse and receiver away from cordless phones, mobile phones, and other wireless devices.
- Keep them off metallic surfaces.
- Keep the mouse and receiver at least 3 feet from other wireless devices.
- Test whether the mouse works on another PC
- If it does not work on another PC either, the mouse may need to be replaced.
- Some devices need the correct driver installed when tested on another PC.
- Check for driver updates in Windows
- In the taskbar search box, type check for updates and open Check for updates.
- Under Windows Update, select Check for updates.
- Also open Device Manager, find the mouse or related device, open Driver, and select Update Driver.
If the mouse is working but Windows still shows a low signal warning, that message can be hidden. Warning: the documented method uses a registry change, so it should only be used if the mouse already works correctly and the warning keeps appearing.