Toshiba laptop has no sound?

So I have this Toshiba laptop with Windows 8 that's brand new! I've noticed that my minecraft, internet, and even the startup sounds aren't playing! In the bottom right corner on the speaker button, it says the volume is at 100! And when I go to control panel and look in the sounds, it says "This device is working properly." I can't figure it out! All the sound and SmartAudio windows say its working well, but I can't hear a thing! Please help!

Added (1). I forgot to add, this started kinda after I put my headphones in it for the first time! But I tried to put them in again and it still didn't have sound. :/

Unsintall the sound driver and then reinstall it.