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Checker board Screen

Punkyclown

Well-known member
Started up my Mac SE today and loaded the system (through an external drive).
Ran okay until I swapped out the disks, then the screen deteriorated with 
a butch of line that broke up the screen.  Shut it down and on subsequent restarts
all I get now is a checker board pattern on my screen.  Any ideas?
Thank you,
Brad Hansen
 
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