1 Reply Latest reply: May 20, 2012 11:52 AM by mende1
Caseyjt Level 1 Level 1 (0 points)

Without warning, my iMac (early 2008) will freeze.  The screen will go white or black and green vertical stripes.  I have to hold the power button to reboot.  Any thoughts as to what may be causing this?

iMac, Mac OS X (10.7.4)