If your keyboard keys are not responding you should initially blow off the keyboard by tilting to one side and spray with a can of compressed air starting at the top of the tilt and working your way down.
Our troubleshooting page could help you to check what to do with your device.
[[Toshiba Satellite 1415-S105 Troubleshooting]]
Also, if your keyboard doesn't respond and you want to replace it, we have an amazing guide that you can follow.
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