# method 1
start -> run -> gpedit.msc
1) User Configuration -> Administrative Templates -> Start Menu and Taskbar -> "Disable and remove links to Windows Update"
2) User Configuration -> Administrative Templates -> Windows Components -> Windows Update -> "Remove access to use all Windows Update features"

# method 2
start -> run -> regedit
search and disable:
1) NoWindowsUpdate
2) DisableWindowsUpdateAccess