My iMac "died" on me a few months back and until now "survived" with my macbook but things are tough sometimes.
I know it's old but worked so well for my needs and this is not the moment to be even thinking about buying a new one, so please if you can help me diagnose.
I had already posted a similar thread in which the "impression" was about a failure of the graphics card.
As fixing that is not an option at the moment (and would probably just jump on the occasion and buy a new one if I could afford it) I'm asking is there's a way to be "sure" of this or rather ideas to exclude a memory or OS problem.
Here's the description of what I experience:
The iMac boots with one of the usual chimes and the first screen with the apple and a progression bar seems fine.
At about midway though the normal boot screen gets substituted by an abnormal "white noise" screen (will post picture) after which the boot screen resumes seemingly correctly, then loads my "defocused wallpaper" but then instead of progressing to the login or desktop it only opens a strange black window with nothing in it, the corners missing, a blue square.
Mouse pointer is well formed and moves normally but nothing reacts and the only thing I can do is force a shutdown by keeping the power button pressed for several seconds.
When the iMac broke I was working in Lightroom normally and I believe just in coincidence when I loaded a new image the image loaded with glitches and at first I thought that it was the image to be corrupted but then all the desktop started corrupting and that was the end.
Tried booting with the D letter on the bluetooth keyboard pressed but this only stops boot at the "white noise" screen. When I release it it proceeds with the "unfocused desktop wallpaper" and then the single widget-less window on which I tried clicking and can only drag around.
Here is roughly the sequence:
Any ideas on how I could understand if it's memory, graphic card or OS corruption?
Thank you very very much I am really in need of saving this old fossil spending less possible
I know it's old but worked so well for my needs and this is not the moment to be even thinking about buying a new one, so please if you can help me diagnose.
I had already posted a similar thread in which the "impression" was about a failure of the graphics card.
As fixing that is not an option at the moment (and would probably just jump on the occasion and buy a new one if I could afford it) I'm asking is there's a way to be "sure" of this or rather ideas to exclude a memory or OS problem.
Here's the description of what I experience:
The iMac boots with one of the usual chimes and the first screen with the apple and a progression bar seems fine.
At about midway though the normal boot screen gets substituted by an abnormal "white noise" screen (will post picture) after which the boot screen resumes seemingly correctly, then loads my "defocused wallpaper" but then instead of progressing to the login or desktop it only opens a strange black window with nothing in it, the corners missing, a blue square.
Mouse pointer is well formed and moves normally but nothing reacts and the only thing I can do is force a shutdown by keeping the power button pressed for several seconds.
When the iMac broke I was working in Lightroom normally and I believe just in coincidence when I loaded a new image the image loaded with glitches and at first I thought that it was the image to be corrupted but then all the desktop started corrupting and that was the end.
Tried booting with the D letter on the bluetooth keyboard pressed but this only stops boot at the "white noise" screen. When I release it it proceeds with the "unfocused desktop wallpaper" and then the single widget-less window on which I tried clicking and can only drag around.
Here is roughly the sequence:
Any ideas on how I could understand if it's memory, graphic card or OS corruption?
Thank you very very much I am really in need of saving this old fossil spending less possible
