Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

fastlanephil

macrumors 65816
Original poster
Nov 17, 2007
1,289
274
This is a continuation of my thread concerning the Apple Hardware Test error code 4M0T/1/40000002:pCI-0.

https://forums.macrumors.com/threads/1837418/

I installed iStat Menus and it shows the IOH HeatSink in Red with a reading of 149 degrees. I have read that this should be about 70 degrees.

I'm thinking that it has to do with the dual hex core upgrade?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.