I have a 15" pb 867 MHz running 10.2. It froze (no cursor movement, no response to opt-cmd-esc or cmd-tab) so I powered down by holding the power button, then tried to start up again. It made several beeps and started flashing the sleep-indicator led in a pause-four(?) flashes-pause pattern. IIRC the screen was black.
A few minutes later it started up OK, but I'm curious what the flashes meant.
Thank you.
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