When you say "drive is using 100%", which category is it? Are you looking on the Overview tab in Resource Monitor and seeing high usage under CPU, Disk, Network, or Memory? There should be a way to find what's causing this. We just need to look at the right place at the right time. Let's just start here so I have a better understanding of what you're looking at. Also, please tell me which operating system and if it's fully up to date.
First guess is possibly virus scan.
This post was edited by SCRIER. on Jul 28 2019 08:52am