What died in my iMac?
My iMac A1174 slowed,I upped the RAM to max & it was ok for 6 months, over the last 12 months horizontal lines have appeared on the screen, performance has slowed a lot, it kept freezing and I got a white screen occasionally. I reloaded the OS, 10.5.8 and now it is completely frozen and won't do anything even after rebooting. What is wrong or more correctly what may need replacing please?
Is this a good question?