I had to get the Mainboard of my Acer Aspire 4752G Laptop repaired, and Windows 10 Pro Insider is now deactivated. A 'click' on the Activate Windows now will end up in error messages explaining that Windows didn't have a Digital License and could not be activated! Ok, I checked what all was changed on the Mainboard because initially, I was take it to repair as the Battery could be charged anymore. The Service explained that also was a problem with the chipset and the WiFi Module, which both worked well at the time I took the machine to the repair shop! So, they changed the chipset and several small IC's (power/charging related) and repaired the WiFi Module. All is working now as it should, just Windows 10 need to be activated again, or maybe re-installed! Firstly I'll try a normal Activation using my Windows 8.1 Key. If that didn't work, I'll install 8.1 again, activate it and install Windows 10 pro via WU, and after that, do a new clean install of W10Pro. This thread is just as a reminder what could happen if an MB gets repaired: ACTIVATION was gone! Just to tell what that repair has cost: THB 1,500.00 (US$ ~45.00)! That low cost is the exact reason for doing such repairs in Thailand!