Hello. My friend bought a new laptop and i installed windows 10 on it. After i installed it i saw that the disk usage was at 99%-100%. I tried to disable superfetch, windows search and windows update after the windows got the latest update 1803, and just about everything i found on the internet for a few hours. After failing every fix, i tried replacing my friends laptops hdd with my laptop hdd to see if the hdd was damaged. My laptop had windows 10 installed about a year ago on it and never had this problem. After i installed my hdd on my friends laptop and reinstalled windows 10 we still got 100% disk usage. So i put back my hdd in my laptop and his hdd in his laptop. After i put mine in my laptop i reinstall windows 10 and i see that now i get the 100% disk usage too. I saw that it goes to 100% disk usage when i use programs. For example, whenever i try to download games on steam i can't because it stops downloading because the hdd is at 99%-100%. Please help so i can fix my laptop and then my friends laptop. I tried everything i could find!