This sequence was working, but now it just goes to the white screen after Apple with red lines through it.
MacBook Pro, Mac OS X (10.7)
Posted on Jan 25, 2016 8:04 AM
Q: What if CMD-OPT-P-R no longer works on Yosemite on a 2011 MacBookPro?
Are you sure you are holding down the keys long enough?
Reset NVRAM/PRAM