|If your BIOS shows the full drive size, then it should show up in Disk Manager, at least as raw unformatted space. If it is there as raw space, try a few different recovery programs to see if you can recover any of your files, then create a new partition and format it. If it is not showing up as its full size in your BIOS and does not show up as unallocated space in Disk Manager, I doubt that unplugging it and replugging it will make a difference, but it cannot hurt if you try. I would then run the hard drive mfg's drive utility via a bootable CD and have it test the hard drive. There are some things that it may be able to repair for you, or at least it will tell you if you need to replace the drive and take the guessing out of this process.|
You have to be a little bit crazy to keep you from going insane.