even doe u clone to the same model the HW ID is different like BIOS,NIC ....if u dont want to buy a license get a vilid win7 or 8 and upgrade.
The OP states the laptops desktops all have a MSDM bioskey for 10, normally it only has to be (re)inserted to activate it.
he said is a Lenovo M910 desktop...your right they should have activated...maybe something change in the cloning process.
Isn't the better way to do this to use Sysprep and Generalize? Wouldn't that ensure activation and in case of any slight hardware differences?
The trick I use, is to install the image to the pc, being completely offline. When the image is right, it can be cloned to as many pc's as you want. The only thing you need to do is to readout the bios key and insert it into windows (slmgr /ipk "key") Then connect to the Internet, and it will activate
If you change your product key to the Manufacturer's OA3 key in your offline image then you don't even need to do that.