I had to restore my system and now when I open word or excell it is asking for my product key which I no longer have. There was a backup written to my harddrive but I can't find anything that mentions the product key. Does anyone have any ideas what the file name would be and where it is located in the backup? I'm using windows 7 on a Gateway Acer model NV53 laptop. The office program was purchased after the laptop. Thanks.