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Usually it's not among the first things I'll do on a new Mac. But after my newly purchased MBA suddenly went black it seemed to be a good idea.
 
Just tried to use the diagnostic start up, it goes into the screen, I select English, then the pointer freezes and I have to power off.

2013 11"

tut
 
Try to use the cursor keys instead of the trackpad. Be sure to have a wifi network available or the thunderbolt ethenert adaptor connected. As far as I know the starter downloads the image from the internet.

My MBA replacement is scheduled to arrive on Monday...
 
Thanks, the cursor keys made no difference, but after the fifth shut down it went into examination mode and reported no problems.

tut
 
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