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Found 2 results

  1. I am having issues with my Macintosh 512k. The machine will usually boot with the checkerboard pattern shown in the pictures. Sometimes it will make a very distorted sound on boot. The issue is not with the crt as it has been tested with other boards. Occasionally the checkerboard pattern will change. I suspect the the issue is with the roms installed. I have tried cleaning the roms but this does not change the issue. I am curious if any one else has ever had a problem similar to this.
  2. It's an old laptop that takes only floppies. and maybe some other ports on the back. I need to clean it to factory fresh but don't want to erase the OS because I have no install media. It's running MAC OS 8.5.1 from 1995. Thanks for any help. This is an entirely new computer to me as I've always been a windows guy.
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