How to upgrade RAM for your Macbook Air 2013 ~ 2015 #ENG sub
ErrorPPM002pointstoamemory(RAM)issue.SeeAppleDiagnostics:Referencecodesformoreinfo.,Thatappearstobeamemoryissue.Firstthingwouldbetomakesurebothmemorymodulesareproperlyseated.Sometimesthememorylatchesoneithersidecan ...,Itisindeedahardwareissue.We...。參考影片的文章的如下: