Windows 10 leaking memory acer swift 3

I recently purchased acer swift 3 and when transferring my old files from my previous one I used a new backup program and accidentally cloned my old laptop onto the new one. This gave me a whole bunch of errors and i thought my new key was lost so I torrented a copy of windows and did a fresh install. I was getting a bunch of leaking memory and after installing and uninstalling drivers and doing various windows optimization tricks I couldn't find the source and did another install. I noticed the laptop runs fine initially but after updating 2+ years of windows updates (it was an old *****), I get 40-45% ram utilization out of 8gb with a barebone stock windows and no programs running. It then came to my attention that the license is tied to the mobo and i should be able to download Windows 10 from Microsoft but they don't have TB compatibility for their current edition. I am receiving this error https://support.microsoft.com/en-us/help/4592819/error-when-plugging-in-a-thunderbolt-nvme-ssd. Any way I can get a fresh install to get rid of the horrible leaking and battery draining.