Alright so I have a 2009 Mac Pro 4,1 desktop with a 2.66GHz Xeon processor. I'm having this ongoing issue (for the past 2-3 weeks) where after anywhere from a minute to say 30 minutes or so the desktop completely freezes. No kernel panics, just a frozen desktop. Keyboard & mouse are both completely useless, so I have to hold down the power button on the front if the machine to shut it off. I brought it into apple and they kept it over night and ran all the tests they could through at it. When I got it back they said my boot drive (a WD 2TB 7200RPM 64mb cache) was bad, and that was why it was freezing. They told me besides that the machine is 100%. So I went out and bought a brand new Seagate 1TB 7200 RPM 64MB cache drive, installed it in bay 1 then installed OS X Mavericks and did all the updates. That fixed the problem (or so I thought), so I put my Windows Drive (bay 2), iTunes drive (bay 3), & my time machine drive (bay 4). Again all was well. Until today (little over a week since the last batch of freezes) when it started to freeze again. It never freezes for any specific reason or on any specific application.. It just randomly freezes. I've tried reinstalling mavericks at least a dozen times... No dice. I've tried different ram.. Again, didn't change anything. I even removed all my drives except my OS X boot drive (from bay 1) and that actually had it working the longest.. But in the end it froze anyways. Part of me thinks I might need to replace the Backplane Board.. I'm thinking it might be a SATA issue.. But I'm not sure enough to order the part. So if anyone with some more knowledge or experience with this sort of issue could help me out, that would be fantastic.
Thanks :)
Thanks :)
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