Start by going to this link and clicking on download Update Assistant: https://support.microsoft.com/en-us/help/3159635/windows-10-update-assistant
Then once you click it, it will take you to another website and you will need to click the big update now
on it.
Once you click it, it will download something like this:
Once you click on it, it will open up a window and say:
Once you update it will take up to 1 hour and look like this and once it looks like this press restart and reboot your computer(May take up to 15-20 minutes):