Put in a clean drive, restore from your Ghost backup and see what happens. This will be a quick test to see if it's a software issue.
Also, run the DRIVE FITNESS TEST on the drives from the drive maker's web site.
System had been working perfectly until yesterday when I was scheduled for an incremental backup. It seemed to be working fine until something happened to cause it to stop. I am getting error codes E7D1001E, 00000017, OxE7D1001E. When I looked it up at Norton, it says to run chkdsk on drive c. Have used MS, Norton Utilities, and Fix-it and they can find nothing wrong with the disk. Any ideas what could be causing the problem?