Mouse or Keyboard Not Working: How to Diagnose It
Check step by step whether the problem is the peripheral, the port, or the drivers.
1. Try another USB port
Especially if you use a hub or a tower's front ports — try directly in a rear port.
2. Try it on another machine
If it doesn't work there either, the problem is with the peripheral itself, not your PC.
3. If it's wireless
- Check or replace the batteries.
- Confirm the USB receiver is properly connected.
- Re-pair it if it's Bluetooth.
4. Reinstall the driver
Device Manager → find the device (sometimes under a warning icon) → right-click → "Uninstall device" → reconnect it so Windows reinstalls it automatically.
Tip: if only the keyboard or mouse stops responding DURING use (not when connecting), it may be a power-saving option in the USB controller's properties — turning off "Allow the computer to turn off this device to save power" in its advanced properties usually fixes it.
Frequently asked questions
How do I know if the problem is the peripheral or my PC?
Try the mouse or keyboard on another machine. If it doesn't work there either, the problem is with the peripheral itself, not your PC.
Why does my mouse stop responding after a while of inactivity?
It may be due to a power-saving setting in the USB controller — turn off the 'allow the computer to turn off this device to save power' option in its advanced Device Manager properties.