Moving OS to new custom build.

[jloch21]

I have an old pre built computer with Windows 7 and I was wondering if I could use the product key on the case and move the OS to my new computer. And if so where can I find an iso file?

 

[psoohoo]

if your machine SHIPPED with windows 7 it probably has an OEM license and you cannot transfer it to another machine.
If you purchase a Retail copy then you can reuse the key but contacting Microsoft customer support when you need to re-activate it.