You've likely heard that you can't straight upgrade from Windows XP to Windows 7.You can upgrade from Windows Vista to Windows 7, but not from XP to 7.If you try to reinstall Windows XP and don’t have your original product key or CD, you can’t simply borrow one from another workstation.Normally, you’d have to obtain a new product key, meaning a new purchase of Windows XP.I think this is a hassle, but in the case of XP to 7, it's necessary.I was asked to "upgrade" a relative's machine from Windows XP to Windows 7, so I figured this was a good time to write-up the experience in case it helps others.With that in mind, we thought it was high time to give you all chance to understand more about the 25 characters governing your system. And most importantly, are they actually of any use to you now?
Once the bootable media is created, open Windows Explorer, navigate to the DVD or USB drive and double click
If you’ve used a Windows product in the past two decades or more, you’ve likely encountered a Windows product key.
You may have even found immense frustration as your product key and Windows didn’t play ball.
Setup takes this information, mixes it with information it derives from the hardware configuration of the workstation, and creates a code that it sends to Microsoft to validate the installation.
This can cause problems for support techs, because each product key can be used only one time.