[Stephen]

Originally Posted by truthspeaker

on 29th July new build or just updates?
i thought we o ready have RTM. so why we need new build or updates on 29th July if we are on RTM build?
yeah your right i upgraded first then i did clean install.
i think windows 10 remembers my windows 8.1 serial key when i did clean install.
maybe windows 10 saved my win 8.1 key in the BIOS or on Microsoft server.
so you can format your hard disk drive and still be activated permanently. or forever

That is just ludicrous. Windows would never save your key to your BIOS. Certain details about your licence are probably stored with Microsoft but I don't think they keep your actual serial key.