My first macbook pro was in 2007. I had it in a demo area and I shattered the screen. I found a place selling the display unit, which I replaced, for a fractio

My first macbook pro was in 2007. I had it in a demo area and I shattered the screen. I found a place selling the display unit, which I replaced, for a fraction of the cost of having apple repair it. I imagine this is to cut down on the number of Apple computers repaired with bootleg parts, then either resold to Apple, or brought in for warranty repairs, but stopping legit DIYer from repairing their hardware is a pretty terrible side effect. EDIT TO ADD: More likely, the security chip verifies the hardware wasn't tampered with, so it needs special software to update its checksum.