On Mon, 04 Apr 2016 12:20:13 -0700, Oren wrote:

On Mon, 04 Apr 2016 15:10:16 -0400, wrote:


Install Belarc Advisor and it will give you the installation key used
to install windows and then you can do the phone activation, giving
Microsoft the code.

True, but a caveat. It may/will give the original OEM product key.
BTDT. If the key fails, use the label key shown on the machine label.
A different key but it matches the version.
They key on the label will require re-installing the original
version of windows. The key reported by Belarc WILL be the key of the
currently installed product.

I've been forced to do this several times for customers who have lost
their licence certificate, or on laptops where the label has been
worn so badly it cannot be read.