Or you can type "services" without quotes in the Search the Web and Windows Bar. Click on the first search result that says "Services Desktop App"
Scroll Down to Windows Update Double click on it. Drop down menu set to Disable Then click Stop service
Restart the computer. It will no longer check, download, or install updates (any updates ready to install prior to performing the steps above will install)
To prevent those from installing, or to roll back the install use this tool provided by Microsoft
https://support.microsoft.com/en-us/kb/3073930