HDD causing stutters

Bit of a weird one, long story short, I had all my games stored on a HDD which had horrible loading times and constant stuttering so I opted to purchase an nvme.

The load times and constant stuttering has now resolved itself, however, at certain times my game stutters when I hear the HDD reading but the game is installed on the nvme.

Can there be something triggering the HDD and causing my game to still stutter at times, even though there are no games installed in it?

Thanks!