The sticker on the case is useless. Only the SLP serials will activate the OS. The tool should activate with the supplied files, you should not have to add the pidgen or dpcdll files. They are present for all service packs and install accordingly. The COA is proof of purchase only..no activation will happen with it.. The tool supplies the SLP serials, this not work?? It would actually be weird if the COA activated the OS..