Does this PC come with WIndows 10?

Did you even bother to read the description in the ad YOU posted?

"Product Features

Windows 10 operating system
Windows 10 brings back the Start Menu from Windows 7 and introduces new features, like the Edge Web browser that lets you markup Web pages on your screen. Learn more ›"

What do you suppose THAT means?

If come without windows 10.you can buy a key +download from this site:www.keyscodes.com
I bought a key from them 1 year ago,it works fine.

TROLL ALERT!!!!!!!!!!!!!

Before buying any PC Read carefully Product Features.

Can you read?

Under the heading "Product Features" where all the hardware is listed, you can see that it says it comes with Windows 10.

If your buying a PC from Best buy it likely has windows 10 installed on it.

If you read the page under "Product Features" you would see:
Windows 10 operating system

Pretty much all pre-built computers come with Windows pre-installed.

Yes

FYI: 2 PCs ago I had a PC with AMD CPU and graphics card. They run HOT - and the fan WILL be on A LOT. If you are fine with the noise, AMD IS a cheaper price point. I went with Intel and nVidia for my new PC, and love it. Depends on what your budget is...