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myG5 do a double beep

myG5 do a double beep when I try to start it, after the fan go on but the G5 do not start.


I try to remove one ram, I reset the SMU... nothing go

PowerMac, Mac OS X (10.4.11)

Posted on Aug 17, 2011 3:41 PM

Reply
7 replies

Aug 17, 2011 3:53 PM in response to yvonfromst-cuthbert

Hello,


1 beep = no RAM installed

2 beeps = incompatible RAM types

3 beeps = no good banks

4 beeps = no good boot images in the boot ROM (and/or bad sys config block)

5 beeps = processor is not usable


In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.


Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.


Is this a G5 iMac, or G5 PowerMac, the pm needs pairs of RAM to work.


If you're sure the RAM is good, try the Hair Dryer trick...


http://discussions.apple.com/message.jspa?messageID=13240047#13240047


https://discussions.apple.com/thread/3061091?answerId=15223603022#15223603022


https://discussions.apple.com/thread/2620983?answerId=15499912022#15499912022


https://discussions.apple.com/thread/3175959?answerId=15613068022#15613068022


It can show on any G5, and even many other computers & electronic devices of the period.

myG5 do a double beep

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