I already answered you. Your hard drive is failing. The drive controller is faulty. There is no reason not to believe the error message. This is hardware, not software. Chkdsk is a software solution. You can test the hard drive with a diagnostic utility
downloaded from the drive mftr.'s website or use Seagate's SeaTools For DOS. You will create a bootable CD with the file you download. You will need third-party burning software to do this such as Roxio, Nero, or the free ImgBurn. Burn as an image, not as
data.
http://www.imgburn.com
http://www.seagate.com/www/en-us/support/downloads/seatools/seatooldreg
http://seagate.custkb.com/seagate/crm/selfservice/search.jsp?DocId=201271 (how-to)
Boot with the CD you made and do a thorough test of the drive. If it fails any physical tests, replace it. If the hardware diagnostic is unable to run because of the faulty drive controller, then make a note of that so you can give the information when you
exercise your warranty.
MS-MVP - Elephant Boy Computers - Don't Panic!