Not sure if this is the right place for this type of hardware question, but here goes.
I have a small basement office that has an AIO pc (a Dell something; don't remember the exact model), and a Dell Inspiron tower, both running Windows 10. They're both plugged into a surge protector that is plugged into a standard wall outlet. The modem/router, a switch, and a VoIP phone are also plugged into the surge protector.
About a year or two ago, the AIO started acting very sluggish. The memory and CPU were fine, but the disk usage was at 100% even though no processes were using the disk (some were sporadically using sub MB percentages, but no big hogs).
We replaced the HDD, which didn't help, so Dell sent us a new hdd controller (I don't remember exactly which part though) for the mobo which fixed the issue.
A few months later, the same thing happened to the Inspiron tower. Instead of dealing with replacing the controller, we bought a new machine. It's been working fine, but last night I checked and the disk usage is at 100% with no processes using the disk.
This system used to be really performant, but that is no longer the case.
I don't know how to go about debugging this to find the root issue. Any ideas?
