Hi there good people, I'll jump straight to it. I am trying to install this on my Lenovo G510 laptop : (d/l from torrent ) Right now my system is running this : It is authenticated but not validated. And updates are off. Boot mode can be set to UEFI and i have the thumb rufused and ready. My Data is backed up as well. I would prefer doing a clean install. My questions are these : a. Am i missing something in the preparation ? b. How do i authenticate and validate this install on my laptop for future updates ? c. Is there a step by step how to for ppl such as myself, here ? d. If anything goes wrong, can i roll back to my existing OS and try again ? The questions might seem basic, but I guess not asking them wouldve been even stupider. Thanks in advance for any help you'd be able to offer. P.S : edited Speccy output attached for closer look, if needed.