TS1587 Intel iMac won't light up and continues to make three load beeps.... What's that about, never happened before.

Intel iMac won't light up and continues to make three load beeps.... What's that about, never happened before.

Hello, sounds like bad RAM...
The following table lists the new tones and their meaning:
Tone(s)    Description
1 tone, a 5-second pause, repeat    No RAM installed
3 successive tones, a 5-second pause, 3 successive tones    RAM does not pass data integrity check
1 long tone when holding down the power button    Firmware upgrade in process. See About firmware updates for Intel-based Macs for more details.
3 long tones, 3 short tones, 3 long tones    Firmware restoration from CD in process. See About the Firmware Restoration CD (Intel-based Macs) for more details.
http://support.apple.com/kb/HT2538

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