"Startup chime, no boot, white screen of death" için yanıtHi Guys ! I had the same problem this week, moreless. I have a macbook pro 13 inches mid 2012, not under guarantee. The very same problem occured : withe screen after startup chime then nothing. The screen eventually turned black with white text "a disk error occured press ctrl+alt+del to restart" which is a windows 7 error message from my bootcamp. Not a single one of the usual fixes and combinations listed above worked. This means that the macbook can't boot neither on OSX nor Windows bootcamp. I suspected a disk failure which is strange because it is a SSD, which is usually more reliable than a normal hard drive.. So I opened my macbook, took the drive apart an put it in an external enclosure to boot in USB. It worked like a charm ! (wtf ?) So I ran the utility disk to repair any eventual disk problem then remount the SSD inside. This time the MBP could boot but only on recovery mode (screen with question mark folder, then a world globe asking for a wifi to run the recovery mode), the utility disk...