My MBP's motherboard was replaced by Apple, but in the weeks after there have been kernel panics every so often. Q. After a motherboard replacement, is it advisable to do a re-install of the OSX system. In other words, would using the hard disk and system - set up on the old motherboard - create any problems with the new motherboard? For instance, when I first booted up the Mac with the new motherboard, a few minor apps reconfiguration (I can't remember the details). The thing is, the motherboard was replaced in the last few days of AppleCare, and nevertheless the new motherboard has 90 day AppleCare on it, however, Apple claim that the kernel panics might not be due to the new motherboard. They say it could be the 3rd party memory upgrade (which never had any problems with the old motherboard).