Hello all and thanks in advance.

Recently I noticed my pc was making strange resonating noises and I found it was from my two hard drive running at the same time.
To solve this I check the power option to turn disks off while on idle but it won't seem to work.
After this, I dowloaded Sysinternals Process Explorer to see what was using my drives and, while everything is normal on D: drive, on E: drive I found some processes related to explorer.exe and that might be the problem

I remember in early builds of windows 10 it worked but it stopped working since last month or so.

Hope some of you can help me. Thanks