google for "disktest.exe" - this utility program will help you with
determining whether or not your drive is due for the junk heap. It will
repair the MBR (master boot record - is required regardless of whether a
drive is bootable or not) and will also repair the MFT (master file table)
as long as the mft and it's mirror are not both bad. You can also use it to
copy files off of a bad drive.