Reset laptop without CD?

Can you reset a laptop without a CD so that it is as it was when it was new?

With a USB stick, this is also the long-established method.

Sure, with a boot stick…

I assume you have Win10 or Win7?

Then download the Media Creation Tool from Microsoft… You can use it to create this stick.

You don't actually need any previous knowledge, because the program is structured so that everyone understands it.