Hello all, i need your advice. I lost all the cds that came with an IBM thinkpad, i don't know where, in my moving surely... anyway, now my laptop screwed up and has to be reinstalled, i installed a windows version on it, using the key that is on the sticker; it installs but then asks me to activate. and then when i try to activate, it say key not valid... why?? I don't understand? will i have to buy another windows.. i don't think ibm will remake the cds from the laptop.. since now it's lenovo that handles it. i am confused and i need to have the system up and running. bye and thank you.