Tiny slide switch button on the left hand side of my girls laptop is stuck?

Ok so i sent out my girls laptop about 3 months ago, because the motherboard and keyboard went bad. They said oh it will take 2 weeks to get back out to you.... Anyway they replaced the keyboard and the motherboard, and everything works great now. But there is a tiny slide switch button on the left hand side for a wireless connection that will go left or right. It is stuck and wont go right or left. So i pushed it a little to hard and the button popped off. How can i fix this... Should i unscrew the bottom of the laptop and try to fix the switch? I'm def not sending it back out again to wait another 3 months.

Computer itself is a gateway t series laptop.
 
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