eatmypie :
Dell, Hp, and all of the other manufactures don't use the coa license on their systems. They use their own. If you need more information on this use google.
A license on the laptop from Dell, HP, or whoever is almost certainly an OEM license. Dell or HP being the OEM.
And as such, non-transferable.
Now...if the OP had purchased a Retail license and installed that on the laptop, sure. You can transfer that to a different system. Only one at a time, of course.
The little bird whispering in my ear is saying this is not the case.