Okay, I figured out a method:

Type mount -uw / with the space and the slash. Hit return.

Type mount -uw again with no space nor slash. Hit return.

Then type rm /var/db/.AppleSetupDone and hit return.

The only time text will appear is when you type the second line. After the AppleSetupDone line, you shouldn't even have to type Y and then hit return. In fact, nothing should happen.

If you still can't, type fsck -fy and hit return. This will check your startup volume.

I had that same problem, too.

It is kind of nice that I don't have to worry about that. The screen cable is literally plug & play. Super easy.

Yikes, I only counted 49. If you include the power button as well, 51. But, I could have easily miss counted, and the keyboard isn't going anywhere.

Hey, just so you guys know, reassembling the display is a little tricky. The display might not go on straight, so don't tighten down all of the screws until you are sure the display is straight. You might not even have that problem, but I did with my MacBook.