How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask MacTechTrainer Your Own Question

MacTechTrainer, Sr. Mac Support Specialist
Category: Mac
Satisfied Customers: 1700
Experience:  Apple Certified Desktop & Portables Technician, A+, Cross-Platform (Mac/PC) Tech - for over 14 Years
Type Your Mac Question Here...
MacTechTrainer is online now
A new question is answered every 9 seconds

I have a Power Mac G5 (pre Intel) that will not do a complete

Resolved Question:

I have a Power Mac G5 (pre Intel) that will not do a complete startup. When I push the start button, which is lit, nothing appears on the monitor and the start button light pulses three times, pauses, then repeats, etc. I have tried unplugging and replugging. I have opened the computer in search of the reset button as advised by Apple support, all to no avail. Yesterday I installed Adobe CS4 Suite, but all seemed well yesterday.
Submitted: 7 years ago.
Category: Mac
Expert:  MacTechTrainer replied 7 years ago.
Hello, and thank for seeking technical assistance for your Mac .I am Sr. Mac Support Specialist, TD at your service.

This issue you are experiencing, the 3 light pulses on the front panel of the PowerMac G5, means "3 flashes, pause Incompatible memory (RAM) is installed"

Here is the link for PM G5 LED Diagnostics
LED Diagnostics for PMG5

• I am not sure if there has been any new memory (RAM), installed this could very well be the issue.

• If you have not had any new memory installed, it means the RAM currently in your PowerMac ,may be failing or has failed.

The best advice in a case like this would to take your Power Mac in for diagnostics and repair. Unless you are tech savvy and your PM G5 is no longer under warranty, you can open your PM G5 and reseat the memory and retest your Power Mac's startup. Otherwise, it is best to consider taking your computer in for service.

I have 2 key links here for you, if you need to locate the nearest Apple Retail Stores or Apple Service providers in your area.

Apple Retail Store Locator (Genius Bar)

Apple Authorized Service Provider

If you have need for further assistance, please do not hesitate to reply back to this post. Thanks.


MacTechTrainer and 2 other Mac Specialists are ready to help you