Hello. I apologize if this question has been answered many times. I’m upgrading my motherboard/cpu and I have windows 7 professional OEM. after speaking with two reps from Microsoft they said I am absolutely able to use the key again to reinstall windows but can not obtain the ISO files to create a flash drive to reinstall, I have to get a recovery disc. I know you all know your stuff so my question is after installing my hardware, am I able to really use the recovery disc to reinstall windows on my new motherboard/cpu? Thanks for your help.