Need to uninstall ubuntu

I installed ubuntu 16.04 in my laptop on a partitioned HD so I could have both OS’s. Now I want to remove ubuntu and restore windows but I dont know how…please help. And yes, I now have a laptop running ONLY ubuntu 17.10

I’ve moved this to the category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the page