I got forced into an auto update, downgraded back to win 7, then had to do a clean install back to win 10 using the auto-updated key b/c my win 7 was "bought" at some "store" they didn't like. Doesn't seem to be any problem doing a clean install. As long as your mobo/processor are the same, microsoft should have your system information w/ windows 10 key assigned to it. You should be able to do a clean install on that new SSD, and it should associate that PC/laptop with your previously acquired key.