soumitra sengupta

Kindly go through the following knowledge base article: macOS Sierra: If keys on your keyboard don’t work

Try a couple of good blasts with electronic duster or compressed air to remove dusts from the clogged vents.

If You are using Windows 10: (1) Select “Start” > “Settings“. (2) Choose “Ease of Access“. (3) Select “Keyboard“. (4) Set “ Use the On-Screen Keyboard” to “Off”.

Control Panel\Ease of Access\Ease of Access Center\Use the computer without a mouse or keyboard Is "Use On-Screen Keyboard" checked? If so uncheck it.

When your Chromebook’s operating system (OS) isn’t working properly, you can recover it. Recovery is removing and reinstalling the OS. Ref: Recover your Chromebook

Green means "charged" and amber means "charging." Seeing a green light on your MagSafe means it's getting the signal that they battery is fully charged; there's no other diagnostic info related to this light. May be the logic board is faulty. Before coming to the conclusion check the adapter also.

Kindly go through this YouTube video: https://www.youtube.com/watch?v=ZaNq_IJl...

It must be under the warranty.Let Microsoft handle it.