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Hello,
maybe someone can help me to identify the problem of my Apple IIc.
When I start the computer he try to access the Floppy but he will not boot from it => Message "check disk"
Also random characters are appearing on the screen.
Sometimes after start it shows a prompt, and many random charaters appearing on the screen.
I attached also some screenshots to this message to show you the problem in a more visual way.
best regards
Clockchip
You might have to crack the case open and take a look inside.
Check for corrosion on the motherboard, (top & bottom)
Check that the socketed chips are seated well. Might be a good idea to re-seat them.
Beyond that, you might be looking for bad RAM or other chips, RAM being a likely candidate.
Not much info here, but it's a start. Good luck!