I'm working on a laptop for a friend of mine. The hard drive crashed. I have installed a new HD. It had Windows 7 installed but the sticker for the product key has been rubbed off. I hooked up the old HD to my computer and used a program to find the product key and borrowed a copy of windows 7 from someone else. It will not activate. I keep getting the error code 0xc004e003. I was on the phone with Microsoft for about an hour trying to get this problem resolved. No help. They gave me a case number and told me to contact the manufacturer of the laptop. Not sure what to do next.