GE Keyboard Multimedia Keyboard

I bought this keyboard about 3 weeks ago. It has many features but after 1 week the keys got stuck and needed to be pressed very hard. then after 2 weeks it just stop working all together.

I bought a new on in replace of my old one that is about 13 years old by Microsaoft. I like the way you can open files, and shu down your computer from the keyboard, but the backspace button is as small as the letter's buttons, you always make mistakes...