Green stripe after crash and restart
This happened after my MacBook Pro (17-inch, Early 2011) crashed. The screen 'hanged' and no response the mouse, keyboard or other functions.
Had to force shutdown (holding down power button) and restarted. After the chime sound, the screen shows green semi-transparent stripe. Then the usual apple logo appears and the apple logo goes away leaving the light grey screen. Restarted a few times and same situation occurs. Only when I tried holding on to 'D' when restart hoping to get into AHT diagnostics (failed to get into AHT mode) the process took me into the login page and I could use my laptop as per normal.
This crashing happened a few other times and it was the same process again to get it to work. Occurrence of this as I remember was,
(1) When I got a FaceTime incoming call when working on Word, I have Parallels Desktop with Win 7.
(2) When I was using Adobe Acrobat with a few files opened, together with Mac Excel, Mac Word, Mac Outlook. This time Parallels Desktop wasn't in operation.
Is this a hardware issue with the Graphics memory or Display? Or the RAM? Or anything related to other hardware?
Is this a software issue? I also did a Restore (holding Option key after pressing power button) last night, but this afternoon it happened again.
MacBook Pro, OS X Mavericks (10.9.5), MacBook Pro (17-inch, Early 2011)