Wednesday, January 14, 2009

Power-On Self-Test Beep Definition - Part 1

Power-On Self-Test Beep Definition - Part 1 Apple support
1 beep = No RAM installed/detected
2 beeps = Incompatible RAM type installed (for example, EDO)
3 beeps = No RAM banks passed memory testing
4 beeps = Bad checksum for the remainder of the boot ROM
5 beeps = Bad checksum for the ROM boot block

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