All I get at startup is a grey screen
I Have a macbook pro and only get a grey screen at start up
I Have a macbook pro and only get a grey screen at start up
Go step by step and test.
http://support.apple.com/kb/ts1440
Startup Manager to select Startup disk.
http://support.apple.com/kb/HT1310
Repair Disk Section: "Try Disk Utility".
http://support.apple.com/en-us/HT203176
Reinstall OS X.
All I get at startup is a grey screen