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Apple iMac "Core 2 Duo" 2.16 20-Inch freeze problem

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Hi there,


First, sory for my bad english.


I finaly get my dream reality and I bought a second hand Apple iMac "Core 2 Duo" 2.16 20-Inch (Late 2006 - MA589LL - iMac5,1 - A1207 - 2118). But I get it with a problem.


When there is some activity on the iMac it suddenly freezes. I tried almost everithing. Changed the RAM, the HDD and the problem still exist. I've tried different versions of the OSX and nothing helped.


Sometimes there is some horizontal lines on the display, but they dissappear. Sometimes there is a broke of the image displayed on the display that look like a triangle.


When the iMac get freeze I still can move the cursor, but the only possible way to do something is to press the power button for a few seconds and to turn it off.


I checked for high temperatures, but this is not the problem. The highest temperatura was on the GPU, but it was not so high (lower than 60 degress).


Any ideas?

Edited by Ivo Minchev
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