Anyone had troubles with their 700MHz iBook not restarting? I have seen the posts with the macbooks restarting with colored vertical lines. Mine has done that once, the other times it just bongs then the screen remains black. I have tried resetting the pram, but I can't even get it to reset (no reset "bongs"). I am trying to figure out whether it is the 10.4.7 update or it complete hardware failure......Any help?
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