I have a few Dell Optiplex 3020 PCs and in the last week or so, two of them got a HD failure. These are brand new computers. The only thing that I can think of is that they sit on the floor(carpet) and there might be some static causing this.
Stupid question: They are connected to the network through a Netgear switch with all PoE ports. Could this cause any kind of power surge that could fry a HD?