obahy
Level 1
(0 points)
Q: 2014 mac would not start and makes a single tone. nothing else works, and all start up options do not work.
My Mac would not start. When I press the power botton, all that happens is a single tone. Nothing else appears on the screen.
MacBook Pro (Retina, 13-inch, Late 2013), OS X Yosemite (10.10.4)
by OGELTHORPE,Apple recommended
OGELTHORPE
Level 9
(52,118 points)
Mac OS X
Try SMC and NVRAM resets:
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
You may have to do these more than once.
Then try a safe boot;
https://support.apple.com/en-us/HT201262
If no success, make an appointment at an Apple store genius bar for a free evaluation.
Ciao.
