Sorry if this was asked many times before but I have read so many threads and posts so that I lost track and didn't no what to do ! - I have a clean ProfessionalWMC ISO that I made using Windows Download Integrator with no .data file or key integrated. - I used it with an activation backup that was backed up from win 8 pro upgraded to WMC with M$ free key using Advanced Tokens Manager. - I Installed windows many times and restored the backup and everything was great. - Until I replaced my HDD with a new SSD, Installed my ProfessionalWMC and tried to restore old activation but it didn't work ! - I know that changing HDD doesn't considered as major HW change which refuses old activation but that what happened ! So now I have : 1. A clean ProfessionalWMC ISO with no .data file or key integrated. 2. Unused free WMC key. 3. Old activation backup that contains .data file. What should I do in order to activate again and then make a backup to use it afterwards ?