I have a laptop that doesnt have upgraded Windows XP. So I used a program to find my product key, and then i put win xp cd and i installed windows. Now i need to activate but i cant because i didnt write the KEY down in a paper! However, i found the label sticker that has the product key of Windows XP beneath the laptop. I put the key product in the activation field, it stays incorrect!!! AKH, what i discovered is another product key has been used in my laptop instead of the one that in the sticker! So i should get the one that was in the registry! but i cant cause i didnt write down before i start upgrading my windows!! can you help plz…….I tried to call the customer service many times and it says its a wrong number! Akh, I’m disappointed. I have lots of very important files in my laptop.