I purchased a copy of Windows 7 from eBay and it came with a Product Key label. The disk doesn't say that it is the Service Pack 1 level, so I assume that it is the original version. I decided to bypass all of the updating that would be required to bring the original version up to the SP1 level by just downloading an ISO of Windows 7 SP1 from the Microsoft web site. Part of the process for doing this is to enter the Product Key so that Microsoft can verify that the key is valid. I entered the key and clicked VERIFY. I got a message that this key was not valid for this product. The FAQ stated that the key would not be valid for an OEM, Enterprise, etc. version of the program. This leads me to ask two questions:
1) If I have a valid Product Key for Windows 7 64-bit, why would it not be valid for the SP1 version; it's just the latest version of the original OS?
2) If I go ahead and install the original version of the OS from the disk that I have, will I be able to receive the SP1 update when I have installed all updates up to that point? (Or is SP1 just a compilation of the original OS and all of the updates that were issued before MS released SP1?)
Thanks in advance.