Hey peeps. Here we go. Six months ago my MBR took a so It to the Genius bar and we had to wipe the system and reinstall Sierra. We BARELY got that accomplished. It was some sort of hardware problem (obviously). But what? So zip to present day and pages on my MBP would not show updated documents created and revised on iPad mini(2). So even though I was told I shouldn't try to upgrade to HS, I thought I have nothing to lose. Ninety percent of all problems can be fixed by rebooting or upgrading software. So I tried and the kernel freaked out. We wiped the drive again and got Sierra installed again, barely. This was a new guy and he said the same thing, hardware problem. He said if you could upgrade to HS it would most likely fix you pages problem. So anybody out there have any idea what hardware problem is keeping me from upgrading to HS? I would think it would be the Hard Drive but I don't know for sure. P.S. 500G HD 375G left.