How to find a product key of Asus x 550c

[Plplpl]

I don't know how to find product key on my laptop
And how to install Windows 8.1

 

[lakimens]

The product number can be found on the bottom of the laptop. This is for the laptop, not windows..
Download windows from microsoft's site and put it on a USB, boot into the USB and install. You will need to buy an activation key.
EDITED: Misunderstanding.

 

[SkyNetRising]

You will need to buy an activation key.

Windows product key and activation key is the same thing.
If you have one, why would you buy another (for same computer)?

 

[lakimens]

I think he's looking for the laptop's product number.

 

[SkyNetRising]

Product key is for windows.
Laptops have serial number, model number - not product keys.

 

[lakimens]

He said he wants to find product key ON his laptop. You might be right, we'll have to wait for his answer.
I did tell him to buy an activation key. I'll edit my post for better understanding.