Mid-2011 iMac monitor failure?

Recently (last few weeks) my screen has started to act up, with patterns of small squares mismatched with the background 'blinking' (about 1 Hz) on the screen with somewhat random appearance. I have seen no link to which apps are running, or whether or not I'm networked. Location is not consistent, but seems to be most evident on user-RightHandSide of screen.
Mid-2011 27" 2.7GHz Intel. AMD Radeon HD6770M graphics with 512 MB. running OSX10.0.3 (13D65).
Anybody else see this or know what's up?

I had the same problems on my Mid 2011 Thunderbolt iMac.
External monitor would sleep cycle when connected.
My only solution was to get an 3 in one Ebay Mini DP/Thunderbolt adapter then connect a HDMI to DVI cable to that, with the DVI end of the cable going into the monitor.
There must be a signal issue preventing proper sleep using Mini Displayport/Thunderbolt to Displayport connections for external monitor output.
Here is what my Systems Information Graphics/Display outputs:

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Long shot, but...
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birdmanjay wrote:
... Apple tells me it is the printer mfr issue and printer companies tell me it is apple issue.
Arguably, they're both right.
Changing your router changes everything, so your best course of action is to research the respective printer's documentation and determine how to reset them to factory default condition. Then, add them again using System Preferences > Print & Scan.
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Only the OEM (original equipment manufacturer) Apple hard drives had the proprietary firmware designed to properly monitor the hard drive temperature.
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Make an appointment at the Genius Bar of an Apple store. It is free.
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daniirwan wrote:
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Sorry for the long marquee, but I want to get anecdotal-experience answers on this convoluted subject before I waste a couple months of my fairly-rapidly-closing life --carpe diem. all y'all -- on something that's doomed from the very start.
For reasons I can't quite fathom (relative installed population, maybe), there are very few racing sims -- none, as far as I'm concerned -- for the Mac. That's most def not true for the PC -- I've been a Mac-only user since 1989, but the PC has always been -- when working -- a pretty good gaming platform (ALL it's good for AFAIC), with tons of titles, and the ability to accomodate multi, MULTI-axis controllers, like force-feedback steering wheels with gas, brake, and clutch pedals, and gearshift. I know of nothing like that for the Mac, even if there were racing sims that would run on a Mac.
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HT201343 I have a mid 2011 iMac and i do not see a AirPlay option on my device. Why?

I have a mid 2011 iMac and i do not see a AirPlay option on my device. Why?

Hi Fid
Your mac is fine but you need OS X 10.8 Mountain Lion or newer and your profile says you have OS X 10.7.5 Lion. You need to get ML as a purchase from the app store as mirror is a new feature with that OS.
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