iMac (24-inch, Early 2009). Screen flickers at random times leaving mouse keyboard unresponsive.

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wcs3dh Author

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iMac (24-inch, Early 2009). Screen flickers at random times leaving mouse keyboard unresponsive.

General Info:

iMac (24-inch, Early 2009) running OS X Yosemite 10.10.2.

Processor 3.06 GHz Intel Core 2 Duo

Memory 4 GB 1067 MHz DDR3

Graphics NVIDIA GeForce GT 130 512 MB

Storage 999.35 GB

I have been experiencing this issue for ~ 6 months.

I'll be using chrome (Netflix) or Microsoft Office (excel) or any other task on my computer when the screen will start to flicker and flash (a bit less dramatic, but I can't find the right word). It will freeze, become unresponsive, and I'll have to hold the power button to shut it down.

What could be causing this, and how could I go on about fixing it?

I would be grateful for any kind of help.

Posted on Apr 15, 2015 12:28 PM

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Answer 1

Apr 15, 2015 12:35 PM in response to wcs3dh

http://support.apple.com/kb/HT3964Intel-based Macs: Resetting the System Management Controller (SMC)

http://support.apple.com/kb/HT1379Resetting your Mac's PRAM and NVRAM

Apple Hardware Test & post the results.

If none of the above works:

CLICKY CLICK---> EtreCheck & copy/paste your report.

”EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.”

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