hi. a blind student doing programming from http://www.upskilled.edu.au and using jaws for windows from http://www.freedomscientific.com. I got a Toshiba satellite pro c-50-a in 2014, and had windows 7 pro 64 bit, and I upgraded to windows 8.1 64 bit enterprise through my lectuer. now they are going with windows 10, and he said he could not activate his windows 10 enterprise versions, at his school. so he sent me a windows 7 pro 64 bit, and have the key. and backed up all my data to an external hard disk. now when I run the dvd, and use jaws, it says to get the updates online. when I try this, it then gives me an error message, saying the installation files could not be found or installed. so have tried four or five times, even did a shutdown and reboot. did not fix that issue. so, it says not to not get the updates, and need them, so, is there a tool to downgrade from 64 bit enterprise to 64 bit windows 7 pro. can you help? marvin.