Hey Guys. I had a legit Windows 8 laptop (Acer Aspire E1-571 / Win 8 Core x64) and have now lost activation. Windows 8 was pre-installed when I purchased the laptop. I did a clean install the other day using a retail Win8 ISO ( murphy78's Windows 8 AIO UEFI en-US ) via USB and when the process was complete , I checked my activation status and I was told my key had been blacklisted ?!? I tried to activate via phone and the activation key you input is not recognised. Spoke to Microsoft's activation team and they told me to speak to Acer , Acer said its Microsoft issue. Id like to upgrade through the store on Thursday to 8.1 so , any ideas what I can to to regain my legit copy of Win 8 please ? Many thanks. Sean.