Q: Powermac g5 (single 1.6Ghz) won't boot
Hi there, I have a mid-2003 powermac g5 that is refusing to boot. When I power it on, the fans spin, but the LED flashes continuously. I've tried the hairdryer thingy and that hasn't worked. I suspect the RAM is the problem, but I took one card out and tried to boot it, changing cards each time. This hasn't worked either. Also, when I power on the computer the display doesn't recognise it...
Please help, as I need to get this computer working soon!
PowerMac, Mac OS X (10.4.11)
Posted on Dec 26, 2012 2:05 AM
Hello, the RAM needs to be in opposing Pairs, one stick will not work.
The fans speeding up is normal safety feature when no OS is running.
Can you count the beeps or flashes?
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.
Posted on Dec 26, 2012 10:19 AM