1 - open task manager and serch for service host local system, there are many of it so search for the one that is currently using ressources, click to expand then right click on windows update and end task
2 - right click on any process there and select open services
3 - search for windows update and double click on it
4 - go to startup type and select disabled, then apply and ok
now your problem is fixed for good, your pc will be runing smoothly :) you can also check my video below
if you have any question leave in the comment section