I currently have #1 Laptop running Pro 64bit, this originally came with Home Premium 32bit in which i upgraded from. I've just built #2 Desktop and was wondering if its possible to reclaim the Pro licence from #1 and install as fresh onto #2. Then downgrade or re-install #1 with the original Dell CD to Home Premium?
Won't get away with it as the laptop installation will be on an OEM key, and you can't transfer it to the desktop. You would need to load and activate Home premium on the desktop before upgrading, and that is only possible if you posess a Retail version of Home Premium.