|The hard drive may be faulty and in need of replacement. You can test it with a bootable CD which runs "Seagate SeaTools for DOS" which you can download here (click "Downloads"): http://www.seagate.com/support/down...|
You will also need to download and install "IMGBurn" from here:
Use "IMGBurn" to make the CD from the SeaTools ISO file, then boot your PC from it.
"SeaTools for DOS" will load and you can test the drive with it (use the long/extended test).