I am with J_E_D_70 on this. No driver difference at all going from HDD to SSD. Windows has build in divers for SATA/IDE and most raid controllers. If you are making it to windows, you have the only drivers that would matter.
They are getting very BS here.
DEMAND a damn supervisor. You did not CHANGE anything but the hard drive(so windows boots sees it then re-boots to "install" drivers. after that it should have been all good.). I do this ALL the time on my systems(and clone as well). Give them your key and ask them to ensure it is properly activated in the system. None of this should happen.
I have clones Win7 from drive to drive many times(clone to single drive to rebuild raid volumes[then clone back to the new raid volume], switching from HDD to SSD, upgrading to larger hard drives. Every one of them worked.) and NEVER had this issue. All the copies I use are OEM as well.
I hate when a company passes the buck like this.