How To Uninstall windows 8 and completely erase everything on my hard drive

YANKEEEZILLA

Distinguished
Nov 25, 2013
49
0
18,530
I recently built my first build. And bought Windows 8.1. Sadly I can't download all my drivers because they aren't compatible with Windows 8.1. I'm planning on returning it but I've already downloaded it and ran it for a little while. My question is can I still return it? I bought it at Walmart. I have the receipt. And it's only been 2 days since I bought it. And, how do I completely erase it off my hard drive including everything. To completely have it as it once was without anything installed into it.