This is the third time that a French court had to force a PC dealer to return the money for an unwanted copy of Windows. The Slashdot article has some more information in English. The refunds were between 100 and 300 Euros, depending on version of Windows etc.
Do the math. Laptops nowadays often cost under 700 Euros. Laptop makers still bundle Windows and force it down customer’s throats, but if you don’t want that software, return it! It can shave up to a quarter off the price of your laptop, as you can also get a refund for MS Works or other software that was included without asking you. You can then use some other operating system on the machine, or if you want to keep using Windows, you can use your existing license. Tying a license you’ve already bought to a specific laptop you bought it for is also not legal in many countries. If this happens to you, check what the situation is for your country and perhaps sue the company.