MilanSuperior

Q: repeated crash right after startup with graphic glitches

In the last 24hrs my 27 inch imac has progressively been crashing more and more often... It started with some graphic glitches while using CAD software which eventually would cause the entire computer to freeze up and then crash. After switching it off manually and unplugging it for the night it seemed to be working again in the morning. The graphic glitches soon returned however, in the form of flashes, colored vertical bars across the screen or sometimes a complete grey or black screen. After numerous restarts the problems seemed to be getting worse. Now when I start up the imac I see the below screen, the loading completes but I never see the desktop... The screen then goes grey, the computer crashes and then restarts by itself, it does this continuously until I unplug it... Please! Does anyone know what's going on?!?

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iMac (27-inch Mid 2011), iOS 9.1

Posted on Oct 29, 2015 4:54 AM

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Q: repeated crash right after startup with graphic glitches

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