Here are some common issues that users face with Windows 7 product key:
A Windows 7 product key is a used to activate the operating system and verify that your copy is genuine . Depending on how you obtained Windows 7, your key is stored in different locations. Where to Find Your Product Key windows 7 product key
A: No. Once activated, the license is perpetual for that version of Windows. However, the support for that OS has expired. Here are some common issues that users face