Unlocking 720, 4th core crashes on window welcome screen

Is the 4th core I have unlockable?? I have a 720 BE on a GIGABYTE GA-MA785GM-US2H
Went into ACC, set hybrid and auto. Boots up but crashes after loading window welcome screen. Is this one a busted 4th core?
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  1. Yes, it is unlockable, but it might faulty (functioning with defects, or limited functionality).

    It seems there is a notion out there that of a core being "unlockable" is synonymous with "fully functioning", which is not the case.

    If the core is non-functional (dead) it will not unlock, or rather, the computer will not function with BIOS set to use this dead core.
    If the core is functional, it may be fully working or it may be faulty.

    The Semperon 140, X2 550 and X3 720 all seemed to have one or two locked cores, but some have fully working locked cores while others have faulty locked cores. It's the luck of the draw. (I say locked cores to refer to the cores not normally used, but are present).

    Increase vcore up to what you feel comfortable with and see. Take it off Auto and manually set your voltage, try to boot. If that's not doing it for you, the core is faulty, so best leave it locked (back to X3).
  2. u bought a tripple core, dont get mad because you cant use it as a quad, want a quad, buy a quad
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