EBay classifieds - money back due to laptop defect?

I sold a laptop on eBay classifieds, state everything to my best conscience, even with pictures of the laptop + pictures of the hardware shown in the device manager, there were pictures of the computer from all angles.

Today the buyer writes to me that he would like his money back, otherwise he will go to the lawyer, the laptop is not as specified. The Wi-Fi is supposedly not working, so he wants his money back.
The Wi-Fi still worked for me.
Do I have to give him the money back and take the laptop back?

Do I have to give him the money back and take the laptop back?

Not so easily, the buyer is in the burden of proof here.

You have effectively ruled out the warranty / liability for defects (not the guarantee!) And the buyer has not paid for goods or services via PayPal?

Then your chances are not bad.

edit:

Why do you ask that again?

Let it come; Experience has shown that they shy away from legal action, especially since there's a statement against a statement and nobody can say when something gave up the ghost.