Q: grey screen with prohibited symbol after updating to os x yosemite
I update my macbook pro Yosemite last night and my computer would not shut down so I did a force shutdown. Now, my computer comes up with the apple symbol and go to a grey screen with the prohibited symbol and shutdow in 5 minutes. What can I do? I have a 13" macbook pro mid 2012
MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10.3)
Posted on May 26, 2015 4:06 AM
by OGELTHORPE,Solvedanswer
Mac OS X
Reset the SMC and the NVRAM:
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
Then try a safe boot:
https://support.apple.com/en-us/HT201262
Any change?
Ciao.
Posted on May 26, 2015 4:12 AM