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Original post by: jfavellanedab ,

Title:

new 640 GB HD freeze and beachball

Text:

I installed a 640GB HD on a MacBook Pro 15" mid 2009 but it freezes all the time with plenty of beachball? What can be done? it's original HD is a 320GB Hitachi that works very well.

Device:

MacBook Pro 15" Unibody Mid 2009

Status:

open