So far as svchost is concerned, this is not a virus click here. You don't mention an operating system so I'll assume that the hardware came with adriver that you had to install. This could be faulty, or installed badly. Either way, you need to uninstall it. Go to System properties (there are different ways to get to this depending on your version of Windows you are using), and then look for Device Manager. Now look for your new HDD (you may well find that it has an exclamation mark against it indicating a problem), highlight it and delte it using the keyboard delete key. Reboot you computer and the new device will be found and the drivers will be reinstalled. If this does not work, you may well have a faulty drive, but first get in touch with the manufacturer technical support to see if they have any answers.