Why keyboard key is pressing too hard ?

There could be a few reasons why a keyboard key is feeling like it's pressing too hard. Some possible causes include:

1.  The key is dirty or sticky: Over time, dust, debris, and other contaminants can accumulate on the keys of a keyboard, making them feel sticky or harder to press.

2.   The key is worn: If a key is used frequently, the mechanism underneath it can wear out, causing it to feel harder to press.

3.    The keyboard itself is worn: If the keyboard is old or has been used frequently, the underlying mechanism that the keys sit on can become worn or damaged, causing the keys to feel harder to press.

4.    The keyboard is not properly connected: If the keyboard is not properly plugged into the computer, the keys may feel harder to press.

5.      Keyboard settings: Some keyboard settings might be configured in such a way that keys require more pressure to register a key press. It's worth checking the settings of your OS and keyboard driver to see if any adjustments can be made.

It might be the case that a key is just not working correctly, and that it needs a replacement. It would be best to check with the manufacturer or the brand you bought it from. If it is still under warranty, it might be covered by the warranty.