Hi everyone,
My dad's just brought his machine around to me because it's not booting anymore. The boot chime plays, the Apple logo appears, and the progress bar gets to the halfway point then the screen turns solid silver (no mouse) for about 30 seconds. Then it goes completely black for another 30 seconds. Finally, it reboots itself and the cycle continues.
Booting with Cmd-V doesn't give anything of value; it all looks about normal, then it all goes silver again. Cmd-S works as expected and I'm able to run fsck (no errors) but I don't know what else to try. Cmd-Opt-R also eventually results in the silver screen, once it's downloaded the necessary files.
I'm not finding many reports of this issue. One suggestion I found was that it could be a failing hard drive, but I tried swapping the drive and it didn't help. The battery also looks fine; it doesn't appear to be a power issue. An SMC reset has also had no effect.
I'm aware of this, but the symptoms listed don't mesh with what's occurring here.
Does anyone have any suggestions about what could be going wrong here?
System is a 15" 2011 MBP.
My dad's just brought his machine around to me because it's not booting anymore. The boot chime plays, the Apple logo appears, and the progress bar gets to the halfway point then the screen turns solid silver (no mouse) for about 30 seconds. Then it goes completely black for another 30 seconds. Finally, it reboots itself and the cycle continues.
Booting with Cmd-V doesn't give anything of value; it all looks about normal, then it all goes silver again. Cmd-S works as expected and I'm able to run fsck (no errors) but I don't know what else to try. Cmd-Opt-R also eventually results in the silver screen, once it's downloaded the necessary files.
I'm not finding many reports of this issue. One suggestion I found was that it could be a failing hard drive, but I tried swapping the drive and it didn't help. The battery also looks fine; it doesn't appear to be a power issue. An SMC reset has also had no effect.
I'm aware of this, but the symptoms listed don't mesh with what's occurring here.
Does anyone have any suggestions about what could be going wrong here?
System is a 15" 2011 MBP.