I got my PC about 2 years ago and it has a 1TB 7200rpm WD Blue hard drive and it has worked awesome until about a month ago. My disk usage is at 100% for about 30 minutes after I turn it on and everything opens so slow. In task manager it says Im only doing 1-2 mb/s total for processes and it takes around 8 minutes to fully log in after being turned off. In the performance tab of task manager, it averages at about 800kb/s read speed when at 100% and will rise up to 6mb/s and then go back down to 800kb/s. It rarely ever gets >20mb/s and even when it does, its only for a few seconds. Occasionally after an hour or so it'll go down to 20% usage as it normally would but as soon as i open anything it goes back to 100% and stays there even on a 1mb/s read. I miss having a fast boot time and it feels like im on a computer thats 10 years old.