This is what I would do, and have done many times with older laptops. Go to microsoft and download the windows 10 media creation tool: https://www.microsoft.com/en-us/software-download/windows10%20 You'll need a blank 8gb or bigger usb thumb drive.Then go to SCDkey and buy yourself a license https://www.vip-scdkey.com/software/microsoft-pc-10-pro-oem_1227-20.html That one is for 10 pro, they have home too and they are legit. You'll be better off with a fresh install as Dell, HP. etc installs tons of bloatware and BS that most people don't want and just slows the pc down and 10 makes it's own recovery partition. There are lots of youtube videos showing how to do this if you need help.