I have a 1TB hitachi external which I recently installed in my hp pavilion g7 after the 640GB WD internal 'failed'. After using it for about a week(running windows 8) I started getting messages at startup and within windows about an "imminent" hard disk failure(apparently from the SMART). My question is first ,can anything be done to salvage the situation(aside from buying a new hard disk) and second, is the extra strain on the external from using it to run windows the reason for the error?