-
All replies
-
Helpful answers
-
Oct 30, 2015 12:38 PM in response to 1dumbdadby lllaass,★HelpfulThis
- 3 successive tones, a 5 second pause (repeating): This indicates RAM does not pass a data integrity check.
or
- 3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode.
From
About Mac computer startup tones - Apple Support
Try reseating them memory. For how select your MacBook Pro here:
http://eshop.macsales.com/installvideos/
This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum.