Sad Mac
Sad Mac is an icon or screen of death.
Also recorded as Sick Mac.
Overview
Apple Macintosh OS icon by Susan Kare.
In detail
It is recorded as the work of Susan Kare.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Sad Mac”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q608297: Sad Mac
Consult the source