Computer trouble

Well It all started when my computer i built windows broke i bought a new one and i need a disk to install internet and what not anyways I couldnt find it and so i used i portable hardrive and the hardrive was from a mac and now i cant hear out my speakers why?

 

You lost me. You used a portable HDD, too install a browser, and now your speakers dont work?

To begin, it sounds like you didnt use a legit version of windows. Hence it didn't have IE.

And for your problem, just reinstall the drivers.