Windows data on reset of all files gone?

Un
4

I want to reset my laptop to factory settings, but do not know if then Windows is lost (ie the Windows Key), and then we have to buy Windows again.

Pa

Will not be lost. In addition, the key is usually noted on the bottom of the laptop.

je

No, the Windows key is retained.

My

Your Windows remains, only the reset, Windows is not recommended better completely new.

Problem is that you have a very old version again.

Which needs to be updated again.

My

It does not exist anymore for 5 years