Installing windows on new PC question

razzlE_

Prominent
Apr 14, 2017
4
0
510
Hi there I have a quick question.

If I bought windows 10 on disc for a computer and installed it etc. And then got a new parts so would need to reinstall it, can I use the same code as I used for the past installation or do I have to purchase it again?

I don’t have the disc anymore so Can I install the windows installation launcher onto my memory stick start the computer up with it in and then enter that same code I used before to install it.

I really don’t want to buy windows again!

Helpful replies are appreciated!!