You didn't offend anyone, but expecting help while providing no information is really not the way to go.
Anyway, the first thing would be to check the drive, it may have some issues as kjv suggests, run the drive's manufacturer's diagnostic utilities on it. A bootable Cd is always a good tool to have.
You could also try a LiveCD, either Linux or Winowos PE.
To take the HD out of the equation.
If they boot correctly you know its not general hardware related, and likely the HD is the problem.
If the Live Cd's won't boot wither, then it points to a hardware issue. Some piece of hardware is having problems and is causing the freezing, and its probably not the HD.
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Phil AKA Vacunita
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Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.