Boot problem

Boot problem

Posted August 4, 2018 at 4:53pm by NILOMEDE · 929 views
Macbook pro (Sierra) unable to boot 4 times out of 5. in case of successful startup it can freeze while working Unable to boot in safe mode. unable to boot in ALT+COMMD+P+R AHT says everything OK Startup disk integrity OK File permissions OK Why does this happen sometimes ? not always


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