My daughter has a new MBP that is barely 2 months old and she was using it normally on Sunday evening when the screen suddenly went black with a white Apple logo. On a couple occasions it's been possible to login if the computer has been off for about 8 hours, but it only lasts a couple of minutes before the black screen returns.
She has brought it home for me to look at and I'm really struggling here. Occasionally I can see the backlight on the screen, so it's dark grey, but no other activity or sign of life. I've tried resetting the SMC, PRAM and entering recovery mode. I've also tried to run a hardware test, but I don't seem to be getting anywhere.
When we first tried this evening a prohibitory sign appeared on the screen and flashed intermittently with the apple. At one point I managed to see the caps lock light turn on for a while, however that's gone as well now.
It's feeling very much like something serious has gone wrong here and I wondered if anybody has any suggestions that may work. It was running Sierra without issues and we upgraded to High Sierra a couple weeks ago.
She has brought it home for me to look at and I'm really struggling here. Occasionally I can see the backlight on the screen, so it's dark grey, but no other activity or sign of life. I've tried resetting the SMC, PRAM and entering recovery mode. I've also tried to run a hardware test, but I don't seem to be getting anywhere.
When we first tried this evening a prohibitory sign appeared on the screen and flashed intermittently with the apple. At one point I managed to see the caps lock light turn on for a while, however that's gone as well now.
It's feeling very much like something serious has gone wrong here and I wondered if anybody has any suggestions that may work. It was running Sierra without issues and we upgraded to High Sierra a couple weeks ago.