My keyboard acts funny like that too but its actually usefull in some ways. My keyboard has a power, sleep, and a mail button. without the proprietary driver, windows recognizes the sleep button ...

Holding the Power Button Down Does Not Turn Off the Computer. The proper way to shut down a computer is by pressing the Windows "Start" button and selecting "Shut Down" from the available options.

You can turn off your Chromebook with the keyboard when a power key is located there, or by using a mouse to power it off with the onscreen user interface, or by using its power button.

One of the scariest things that can happen to your Mac, short of actual flames and smoke billowing from the case, is a failure to turn on at all. You press the power button and nothing happens ...