Unfortunately, your Logitech M170 mouse stopped working, but you can try a few troubleshooting steps to narrow down the issue. Since you've ruled out the battery as the cause, let's go through some common possibilities and fixes:
1. Power Switch Issues
Since you mentioned the power switch might not close properly, it's a good idea to check it more closely. Over time, the switch could have become worn out or damaged. Try toggling it back and forth a few times to see any difference.
2. Receiver/USB Port Issues
- USB Port: Try plugging the receiver into a different USB port on your computer. Sometimes, a port may malfunction or lose connection.
- Receiver Connection: Check the USB receiver itself for physical damage or dust. If it works fine, you should see the LED blinking or solid (depending on your mouse model).
3. Re-pairing the Mouse
Sometimes, the connection between the mouse and the receiver can be lost. Try the following steps:
- Remove the receiver from the USB port.
- Wait a few seconds, then plug it back in.
- If your mouse has a reset or pairing button, press it to re-pair the mouse with the receiver.
4. Driver/Software Issue
- Reinstall Drivers: It's possible the mouse drivers have become corrupted or outdated. Try uninstalling the mouse drivers in Device Manager (if you're on Windows) and reconnecting the mouse. Windows should automatically reinstall the necessary drivers.
- Logitech Options: If Logitech's software (Logitech Options or Set Point) is installed, try reinstalling it or checking for updates.
5. Test on Another Computer
Try using the mouse on a different computer to rule out issues with your computer's USB ports or software configuration. If it works on another machine, the problem might be with the system or settings on your computer.
6. Internal Hardware Failure
The mouse's internal hardware may have failed if none of the above solutions worked. This can sometimes happen with older devices or after prolonged use. If you're comfortable disassembling small electronics, you can try opening the mouse to see if anything looks broken, such as a disconnected wire or damaged component.
If the mouse has indeed "burned out" or experienced internal failure, the only solution would likely be to replace it. Since it's been working fine for years, a sudden failure of internal components, while unfortunate, isn’t uncommon.
If you don't want to open it yourself, you should contact Logitech support for a warranty check or further troubleshooting.
Let me know if you need any more help with the steps!