Do I have to return my money for legal reasons if I return the already used laptop?
Because I could not previously know how loud the fan rushes and that the keys can be pressed a bit cumbersome and that the typing is very loud.
Incidentally, I bought the laptop over the Internet from Notebookbilliger.
So can I just return the laptop within 14 days, I mean it would be a loss business for me, because I've already used the laptop?
As long as you only tested it the way you could do it in a shop, this is legally protected under the right of withdrawal.
Yes, you can return the device within 14 days. You can read this again here: https://support.notebooksbilliger.de/hc/de/articles/211865469-Wie-kann-ich-einen-Artikel-zur%C3%BCcksenden-der-mir-nicht-gef%C3%A4llt
You have a 14-day money back guarantee, so you can use it as well. You have to object to the contract. Whether Notebooksbilliger wants or may have something for the use, because I'm too little lawyer. But it can't be a lot, it's probably accepted that way.
If it does, I think you can send the 14 back for no reason. If that is the case and you are dissatisfied, you should return the laptop and look for another one. Even if it is a loss business for them, they want customers to buy from you again, so good service is important
Yes, you can, I recently did for exactly the same reasons. The 14-day right of withdrawal for distance selling transactions applies without any ifs and buts. However, it may be that if the item has traces of usage, the merchant deducts a royalty. That was not the case with me.
