How to choose the correct Windows 10 edition to reinstall on a computer previously activated by digital entitlement when facing the following scenarios (especially for technicians): A computer (oem or assembled) comes to the shop and the holder says he wants Windows 10 back reinstalled onto the PC but, Windows is so damaged that there's no time to fix it and he doesn't remember which edition was used. Windows is unbootable to be able to see the edition. HDD/SSD is dead. A replace is needed but we don't know which edition was used prior HDD crash. Any other possible scenario where retrieval of edition is impossible. Obviously there's trial and error but it's a huge waste of time. In my case, when I talk about reinstalling Windows I mean to say clean install implying formatting or replacing HDD/SSD.