TS3824: iMac (Mid 2011): Unresponsive white screen on startup or vertical lines on screen

Learn about iMac (Mid 2011): Unresponsive white screen on startup or vertical lines on screen
liberty_valance

Q: iMac freezing

Hi there, my iMac is still displaying these same issues, even after updating / reinstalling the OS...

 

I tried changing the HD and doubling the RAM, in case these were too old, but the problem persists. As I remember, it starting doing it the same ir I bought the computer, 2009.

 

As far as I can tell, it's not associated to anything in particular. Sometimes I'm just using Chrome and suddenly the whole display becomes color horizontal lines, sometimes it doesn't happen for a whole week, sometimes this happens twice, trice a day. When it happens, it renders everything useless and I have to boot it manually.

 

Does anyone know what could be causing it? Is anybody having similar issues?

 

Thanks in advance for any help on this!

iMac, Mac OS X (10.6.8), 2.66 GHz Core2Duo 4GB 667 MHz

Posted on Sep 10, 2012 5:58 AM

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