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

Level 1 (0 points)

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

I have this question too

Q: iMac freezing

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by BDAqua,Helpful

BDAqua Sep 11, 2012 1:35 PM in response to liberty_valance
Level 10 (123,860 points)

Sep 11, 2012 1:35 PM in response to liberty_valance

Hello,

Have you blown the dust out lately?

Get Temperature Monitor to see if it's heat related...

http://www.macupdate.com/info.php/id/12381/temperature-monitor

iStat Menus...

http://bjango.com/mac/istatmenus/

And/or iStat Pro...

http://www.islayer.com/apps/istatpro/
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by liberty_valance,

liberty_valance Sep 14, 2012 10:12 AM in response to BDAqua
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Sep 14, 2012 10:12 AM in response to BDAqua

Thank you for the help, BDAqua. I haven't blown the dust out... I don't even know how to do it, gonna check how to and try it.

I have a temperature monitor and all seems ok there... how would the iStat help me with the freezing issue?

Thanks again!
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by BDAqua,

BDAqua Sep 14, 2012 10:51 AM in response to liberty_valance
Level 10 (123,860 points)

Sep 14, 2012 10:51 AM in response to liberty_valance

iStat wouldn't help likely, i just reports temps & Fan RPMs.

So we know more about it...

At the Apple Icon at top left>About this Mac, then click on More Info, then click on Hardware> and report this upto but not including the Serial#...

Hardware Overview:

Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 6 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.
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by liberty_valance,

liberty_valance Sep 14, 2012 11:20 AM in response to BDAqua
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Sep 14, 2012 11:20 AM in response to BDAqua

Model Name:          iMac
Model Identifier:          iMac8,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.66 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          6 MB
Memory:          4 GB
Bus Speed:          1.07 GHz
Boot ROM Version:          IM81.00C1.B00

I talked to the person who upgraded my memory and hd, and he hasn't done a fresh reinstall of the os, as I had thought he had... do you think it could be something related to it?

Thanks a lot!
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by BDAqua,Helpful

BDAqua Sep 14, 2012 2:09 PM in response to liberty_valance
Level 10 (123,860 points)

Sep 14, 2012 2:09 PM in response to liberty_valance

I'd certainly be worth a try.
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by liberty_valance,

liberty_valance Sep 14, 2012 2:21 PM in response to BDAqua
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Sep 14, 2012 2:21 PM in response to BDAqua

I'll try it! Thank you
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TS3824: iMac (Mid 2011): Unresponsive white screen on startup or vertical lines on screen

Q: iMac freezing

All replies Helpful answers

by BDAqua,★Helpful

by liberty_valance,

by BDAqua,

by liberty_valance,

by BDAqua,★Helpful

by liberty_valance,

All replies

Helpful answers

by BDAqua,Helpful

by BDAqua,Helpful