Unfortunately I just don't have the spare dollars right now to buy a new iMac or even a secondhand pre-2012 revision iMac. ![]() Last weekend I contacted an Apple repairman who diagnosed it as a GNU failure. What are your thoughts and what should be my next course of action? Your help and expertise would be most appreciated. The GPU could be on the way out or the logic board chucked a wobbly. Some log files are labelled spin, panic and (vaguely IIRC) hold or wait.īasically, I have no idea what's wrong. Viewing log files in the Console I see the name of the graphics card pop up - ATI Radeon X2000 (FYI it's an ATI Radeon HD 2600 Pro 256MB). General performance is slower (more like dropped frames) and internet browsers slowly refresh each time there is movement. It worked but the vertical stripes remains:Īs you can see, the stripes does not show up on white backgrounds and the bright portions of the screen. I performed the SMC and PRAM resets, tried to log in but got the same results as before. The stop test button was unresponsive too. I waited 30 minutes but nothing happened. No problems were detected on the first short test, however the program stopped eight minutes into the long test. Next up was Apple Hardware Test on Disk 1 of the 10.5.2 install DVD. I then inserted a USB install drive of El Capitan in order to access Disk Utility, run First Aid and find out if there is an issue with the SSD. I tried to boot into the recovery disk but the computer crashes and restarts. Once the progress bar reaches halfway the stripes disappear however the Apple logo and bar do not return either. I turned off the Mac, restarted it and saw this: The mouse cursor was the only thing I had control of. ![]() A split second later the screen froze and tiny faint squares filled dark areas of the screen. ![]() Last night I woke up and logged into my Mac (see signature) after 15 or so minutes sleep and resumed watching a video on YouTube.
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