If I try and run the defragmenter on a drive windows says that it could not read from a part of the disk and tells me to run scandisk with the thorough option. So then I run scandisk with the throrough option. It finds 3 bad sectors. I have had these 3 bad sectors since I bought by HD. It says it fixes them and tells the computer not to use those parts of the disk. THen I run the defragmenter again and I am right back where I started. What should I do? Any ideas?