Is this a laptop or desktop keyboard?
You can probably order a replacement clip online: Replacement Laptop Keys
It might be less expensive to see if you have a local recycle depot or local repair shop and ask them if they have any Key Retainer Clips.
Key Retainer Clip = The retainer clip or hinge pieces that hold the laptop key cap to the base of the keyboard.
the white clip is called the retainer clip, it breaks pretty easy if you play games you can buy new laptop keys and its pretty cheap, take a look at www.replacementlaptopkeys.com, and you will be back to normal in no time