Welcome to the forum
You say you can't do a fresh install of Windows either - I would think this means booting from the Windows disc?
If that's the case, and you can't boot from your Windows disc, then it does sound like a hardware, rather than software/OS, problem.
I would suggest that you a) check your IDE (flat) cables, and if possible try a fresh one; or b) see if you can try the drive on a friend's PC.
If neither of those help, then it may be time for a new drive