Can anyone explain this??? Weird stripes upon return to Mac OS X Lion

[MacRum2011]

I was using iMac and I went away for about an our and upon return this is what was on the screen:

Anyone help out to what this issue is? Its the first time i have ever seen it on any computer i have used. All being normal windows PCs and this iMac being my first ever Mac.

 

[Hugh]

If you are near an Apple store I suggest that you take to them. There might be a problem with the GPU in the unit (no you can't replace it). If you are not near an Apple store then give them a call.

Hugh

 

[Mr.C]

I agree. I suspect it may well be a problem with the GPU. It's possible it may be over heating.

 

[MacRum2011]

i'm no longer under AppleCare, it ran out 5 August 2011...Darn It!!! Won't it be expensive.

 

[FSMBP]

i'm no longer under AppleCare, it ran out 5 August 2011...Darn It!!! Won't it be expensive.

If you get a kind Genius, it could be free. Not to give you false hope but my Mac's logic board completely died. I never purchased Apple Care & was 3 years out of warranty - free replacement (would have cost $900+). That one incident has honestly guaranteed that my next computer will again be a Mac.

 

[freedevil]

i'm no longer under AppleCare, it ran out 5 August 2011...Darn It!!! Won't it be expensive.

This problem plagued me with 2 GPU replacements, the only solution was running a maxed out fan control utility. I use iMac fan control daemon. No more silly glitches and graphical errors.

 

[fullojellybeans]

i'm no longer under AppleCare, it ran out 5 August 2011...Darn It!!! Won't it be expensive.

Apple may cover your unit up to 45 days out of warranty. Can't hurt to try it. Just saying.

 

[MacRum2011]

i just restarted the mac after that happened and all was ok and still is today. I had finished export an iMovie project (20 minute 720P) just before i left the mac and iMovie really does max out the iMac with CPU over 100% and ram at 3.99GB. (being an 2008 iMac 4GB is the limit).

 

[xraydoc]

i just restarted the mac after that happened and all was ok and still is today. I had finished export an iMovie project (20 minute 720P) just before i left the mac and iMovie really does max out the iMac with CPU over 100% and ram at 3.99GB. (being an 2008 iMac 4GB is the limit).

Overheating, most likely.