HT204156: About the screens you see when your Mac starts up
Learn about About the screens you see when your Mac starts up
Q: What causes a red light to come on inside a Mac Pro tower and no boot?
-
by Grant Bennet-Alder,HelpfulNov 10, 2015 10:27 AM
Grant Bennet-Alder
Nov 10, 2015 10:27 AM
in response to PJCfeddafuckup
Level 9
(60,764 points)
DesktopsRAM failure is high on the list. The memories in the Mac Pro towers run HOT, and they die at a higher rate than the RAM in older systems.
Is the power light blinking? That indicates, "not enough working RAM to start up".
-
Nov 10, 2015 10:45 AMby PJCfeddafuckup,No, the power button is not blinking. I have a lot of RAM in the tower. Would a failure of any of the 4 boards cause this problem? I could take them all out and try booting with each separately...is this a good idea?
BTW no chimes happen which I know points to RAM, correct?
I just tried a different power chord after clean the inside of the entire unit, it blinked on for about 4 seconds and went back to dead.
-
Nov 10, 2015 10:35 AMby PJCfeddafuckup,The white power button lights for a few seconds and goes out. I saw one of the fans spin up but not sure about the other 2. Hopefully it will try again and I can check. Nobody is commenting about the red light coming on. I saw a post elsewhere that said that was an overheating indicator. Anyone know about that?
