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Resolved 5K iMac Crashing & Instability

redheeler

redheeler

macrumors G3
Original poster
A few days ago my iMac froze up and crashed, I posted about it here. Since then it has happened again several times, and often webpages in Safari and Opera will crash as well.

Has anyone else been having this problem, or is it just me? I updated to 10.11.5 not too long ago, and I also upgraded the RAM to faster 2133 MHz earlier this month. However, the crashing only started last Tuesday.
 
Well you could roll back each of the changes one by one to see if that improves stability...
But in all honesty, that my experience of OS X for the last few years it not really been stable and I've made no changes.

edit i don't have an iMac, but basic trouble shooting.
 
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redheeler said:
A few days ago my iMac froze up and crashed, I posted about it here. Since then it has happened again several times, and often webpages in Safari and Opera will crash as well.

Has anyone else been having this problem, or is it just me? I updated to 10.11.5 not too long ago, and I also upgraded the RAM to faster 2133 MHz earlier this month. However, the crashing only started last Tuesday.
Click to expand...

You could boot into hardware diagnostic mode.

https://support.apple.com/en-us/HT202731
 
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Update: It appears that's exactly what it is, one of the sticks has gone bad. I'll have to contact the Amazon seller and ask for a return. Thanks again for the suggestion @jerwin.
 
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