100% disk

Hello all, new to this so bear with me. I recently purchased a 1 TB WD Black M.2 NVMe Drive and installed a fresh OS image on it, keeping my two secondary SATA WD Blue M.2 Drives full of games and just re-mapping on the new drive. Ever since then, however, the system always runs each disk, one...

So, I had this pc for a while and just recently it's been running very slow. When I checked the task manager, I saw that my disk was constantly at 100%. For the past 3 days, I tried everything I could. From disabling windows search, disabling superfetch, running chkdsk a few times, fixing...

More than a few billion PC users around, yet the are NO answers for 100% disk problem. The problem has appeared a very long time and still NO one can help!