Keyboard keys not working

Recently I faced an issue with my laptop keyboard. Some of the keys are not working.
As it is still under warranty, I thought of replacing the keyboard.
When I contacted customer support, after listening to the problem he asked whether I tried DRAINING.
Then he explained me the procedure, and guess what - it's working perfectly again.

Here is the procedure of DRAINING:

First shut down the laptop/notebook
Remove the battery
Also unplug the adapter
Now press and hold the power button for about 25-30 seconds
Insert the battery again
Now power on the laptop by pressing power button(normal booting)

Now your keyboard will work again normally.
If the problem still persists, consider replacing the keyboard.

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