How Do I convert Ubuntu OS to Windows OS?

First you need to boot into the Ubuntu BIOS. You need to strike the F2 key while you boot on your computer. From the BIOS, you will see all connected drive to your computer on the left hand side. Select the drive you want to boot from and confirm.

When your computer restart you should see three options with Function keys instruction. Continue to press F10 until the computer boot from your drive with the windows operating system.

From this point you can continue with your windows installation. Do not hesitate to contact me if you have any question. @ boimaandrew@gmail.com