I have a Windows 7 key from a pc(Dell Inspiron 570) that i bought at a Wal Mart(the key that is on the sticker on top of the case). I recently upgraded and took the 1tb hard drive that came with this pc and im selling the old pc to a friend and i would like to know how or if i can reinstall this Windows 7 onto another older hard drive using a Windows 7 cd. Overall i need to know if i can use a new Windows 7 installation cd to reinstall the os on a 3 year old Dell pc using a different key than the one that the cd came with.
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