The problem might be with your keyboard. To verify this, connect another keyboard and observe the results. If the problem disappears, it might mean your keyboard is faulty or that its Caps Lock key ...

Some fonts in Microsoft Office are designed to display all letters in uppercase, regardless of whether the Caps Lock is on or off. Copperplate Gothic is one such font. Check this and change the Font.

Use left and right arrow keys to seek audio. A new update from HP for its laptops has implemented a change that a fair few people are hating, and that's a notification that pops up when you hit Caps ...