I think you are looking in wrong places, your problem is simply this:
Quote: Originally Posted by ayjayar
I run chkdsk /f once a week, every week.
As I posted earlier, this tends to delete/truncate essential files - even with a good disk a small filesystem error will take presedence over any file in that particular space on the disk, /f grants chkdsk the right to fix this without notice, deleting anything in it's way. Chkdsk /f is never adviseable without backup of what you need first, including the OS (as /f needs to be offline on system partition, scheduled at reboot).
Also, if you have circulated this problem for months as you say without luck, my advice is to reformat, reinstall and let it go.