Any Way To Read Part Of Screen That S Broken During Apple Hardwaretest Macbook Air 13 Late 2010

Chosen Solution

So I’m working on this reclamation project for this 13” 2010 MacBook Air. About 1/4th of the screen is broken, so normally I have it hooked up to an external monitor, which works fine. Problem started when I replaced the keyboard recently after it’s power key stopped working. I did the replacement fine, the keyboard now works, but the computer is ghastly laggish when it’s doing anything. I burned Apple hardware test onto a bootable USB, and ran the diagnostic, but the error code that it spits out is half-blocked from the screen damage. Bc it’s in AHT, the external monitor doesn’t work, and I can’t move the window to where I can see the whole code. All I can make out is “4SNS/1/40…” and that’s all I can see. Is there anyway to figure out what the rest of that code is? I can’t seem to select text so copy and paste doesn’t seem to be an option either.

Print the screen or capture the screen and then print it.

I may be wrong @mayer correct me on this , but if you start the macbook up in clam shell mode you can see the diagnostics on the external display. https://support.apple.com/en-gb/ht201834