OS X V10.7 Lion :: Black Screen When Logging In?

Apr 14, 2012

I'm have an issue where when I login to my mac, it goes to a black/grey screen. It's definately on, but you just can't see anything. I'm think poss hard drive failure, but I'm not sure.   

Earler this week, I noticed copying files from different devices and HDD, were particuarly slower that normal. Today the screen started to flicker quite eratically and I had to force a restart. It seem to be ok after that. However a few hours after, while I was doing some work, the screen just went a greyish black.    

Each time I re-booted, it would either just go to a black screen as soon as it started up, or, get all the way the the desktop, then the black screen would appear.   

I've reset the PRAM and SMC. I even got a Blue screen while halfway through performing a Hardware test.  I've tried changing the memory modules and still no luck, safe mode fails too.    

Could it be HD failure? Or something more servere like the logic board. I did the Java update today too, however, I'm sure the screen was flickering before that.    

Info:
iMac, Mac OS X (10.7.3), 750Gb HD, 4Gb Memory, 3.06Mhz CPU

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Info:
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[code]....

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Info:
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Info:
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