If you are facing 100% disk usage issue in your laptop or desktop then you are at the right place. If you are facing this issue then you know how annoying it is to see your laptop or desktop slowing down, this is due to the loading of some services of windows. Here I am gonna tell you step by step solution to fix this problem. We can fix this error by stopping some of the services of Windows. To fix this step follow the steps given below. Disable Superfetch 1. Open Task Manager and click on disk option. here you will see which application is using the disk due to which it is being used 100% (In my case it is working fine). In most cases it is superfetch service which uses the disk 100%. 2. Now search services in Windows Search. 3. Open the app and search for superfetch. 4. Right click and select Properties, then click on below shown option and select disabled and click on apply. Also click on the stop button. You will start seeing the differe