Screen glitching and eventually freezing (pic)
My iMac is a 2009 model refurbished one.
On Saturday I noticed my screen glitch, gave strange colours and patterns, and then eventually the computer froze about 5-10 seconds later. At this point the music/sound was jumping/ repeating too. I turned the computer off and then left it for about 30 minutes and turned it back on and everything seemed as normal. Started up fine and I was able to use it the rest of the day.
Then on Wednesday the problem came back, the same process happened, and I was able to continue using it after giving the computer a break.
Then today (thurs) it happened again, only this time I was not able to start it back up. It glitched from startup and froze before I could login (pictured).
It has been a hot Australian summer which may have contributed? Also, I transported the computer in a car trip to and from a place 2 weeks ago, I don't know if that contributed or not. Or maybe it's just getting old? How long is the expected shelf life of a iMac anyway?
Please help. My livelihood depends on this computer, so any help will be magnified x a million to me.
Please ask for any details I left out. Thank you
