|Could be a spent hard drive. You can make a bootable cd from the iso file downloaded at seagate. Boot to the cd you created when you start up the computer, it will load the seatools menu and do a basic test if it passes do an extended test. see how that goes.|
You will need Seatool for dos, to make the disk not the windows one.
Here's the link...the iso download is near the very bottom of the page.