TS1587: Intel-based iMac: What to do if your computer won't turn on
Learn about Intel-based iMac: What to do if your computer won't turn onQ: MacBook Pro 13" 2010, only beebs every four seconds when I try to start up. Have tried firewire connect to my iMac, open with util ... MacBook Pro 13" 2010, only beebs every four seconds when I try to start up. Have tried firewire connect to my iMac, open with utilities CD, pressed all the correct combination of keys during startup. Battery is fully charged. Will not startup! more
-
All replies
-
Helpful answers
-
Aug 19, 2012 7:37 PM in response to fijimby BDAqua,Hello,
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.