Need to uninstall ubuntu

Hi!!!
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 https://community.ubuntu.com/c/support-help-requests 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 https://community.ubuntu.com/t/finding-help/712 page