When trying to log back from sleep mode, the screen behaves as a rotating cube, with the mouse pointer in the top left corner. Hangs.

iMac OS X Ver 10.7.3
21.5 Inch, Mid 2011
2.5 FHz intel Core 5
12 GB 1333 MHz DDR3
When the computer in woken from sleep mode we see two login options (bineg used by two users).
But when we try to login, the screen just behaves as a sluggish rotating cube.
Nothing works, we just have to hard boot at this time.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login. Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
Note: If FileVault is enabled under Mac OS X 10.7 or later, you can’t boot in safe mode.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem(s)?
After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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Hi, hopefully someone can help me with an issue I've had with my mid-2011 MacBook air.
It was running fine until I installed the 2.9.1 EFI update from the app store; I believe this fixes problems caused with the 2.9 update however since installing it I've now got a problem when trying to log in. This is what happens:
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     Number of Processors:    1
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Hi Roj,
Since the update, I have a different problem (when the laptop is in sleeping mode, screen turned down, fan runs after a certain...)... Did not have time to contact support yet.
One member suggested me to visit: https://getsupport.apple.com/GetproductgroupList.action.
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hi aev270,
sounds like a serious problem to me.
try the following: take out battery, cd-rom, hdd and try again.
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oh sorry and its been closed inbetween uses. When i open it the keyboard doesn't light up and it makes no sound.

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Message was edited by: captfred

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When trying to log back from sleep mode, the screen behaves as a rotating cube, with the mouse pointer in the top left corner. Hangs.

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