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Since the keyboard is essential to input information and run commands, without a working keyboard, your computer is basically useless. That’s why you need to take immediate action.
If the keys become unresponsive, both dirt and dust are likely causes to consider. However, there are times when things go beyond this easy-to-correct aspect.
In any case, your keyboard-related issues can be easily fixed. Consider incorrect regional settings, wrong hardware drivers, virus infections, so updating the drivers and running a malware scan are just some quick solutions to apply.