itunes is running in the background, nothing I can do except shut off surge protector...
just started happening, mulitple times a day
So NOT happy with Apple, a $3000 machine! really??? their products are not worth the premium anymore!
not reliable!
iMac, Mac OS X (10.5.7)
AMD Radeon HD 6770M 512 MB
my graphics card is NOT that one
Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.
are you familiar with this issue?
graphics card and a new lcd?
I think you have a hardware fault. I can't be more specific.
If others are having what appears to be boot up problems with a gray or whites screen and have a '11imac
Make a Genius Bar appointment. It's probable you have a bad video card. It's about a 290$ repair, but apple has acknowledged it as bad design and fixes it free even if not under warranty.
I have the 21.5 inch iMac - Mid 2011 2.7 Ghz Intel Core i5 with AMD Radeon HD 6770M 512 MB Graphics Card.
When I watch netflix or movies at home, I connect my iMAC out if the mini DVI, to HDMI to my TV. While watching the movies, the image on screen cuts and snaps to complete black, every 5-10 minutes or so. Its soooooo annoying. At first I thought it was my TV going bad, but after a while I noticed it doesnt occur when playing XBOX or watching a DVD. It only occurs when I stream through my highly expensive iMAC.
I notice there is a recall, as stated above for the Radeon 6970, but I think the Radeon 6770 is faulty as well.
My serial number ends in xx...xxxDHJT. It would be nice if MAC would extend the recall to invorporate this faulty Radeon card as well, as they have noticed its affects in other machines.
I have the same issues. A lot of buzz is going around that it is a engineering issue with the heat and the backlit display.
The buzz is that Apple has not stepped up to the plate and admit it is what it is. Nor from what I hear they have not even
acknowledged this issue. I hear a change.org petition ringing in my ear for some reason...........
27" Mid-2011 2.7 GHz i5
4 equal slots of ram total 8GB
Same vid card as OP.
Re: 27' iMac (2011) Screen turns off
check that out.
1 year old 27"iMac screen keeps going black
