Installing windows

[nightrider1470]

I bought a MSI gaming laptop.. it doesn't have a drive... Just wondering how I go about reinstalling windows as I have obviously bought it as it came with it new...

Not sure what I need to do

 

[nightrider1470]

Think it's 8.1

I don't have the code though as don't remember getting it with the laptop... Will the install see I have a paid version and let me install?