HT1436: How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005)
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Q: My G5 2003 woun`t boot up
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Jan 9, 2013 11:18 AMby Appaloosa mac man,The first thing to do is identify what issue you need to resolve.
Does the LED on your monitor change from yellow/orange (no signal) to green? If it stays yellow, you need to check your video card. Remove it and reposition it in place. That is a hardware issue.
If the LED turns green, the monitor is getting a signal from the computer but if you do not get a startup screen, you may have a software issue.
Ji~m
