kristiang

Q: Weird graphical "pixelation" and freezing

Hi there,

 

A colleague of mine is having an issue with his 2011 iMac (Yosemite) (black boxes on photo are for his privacy).

The only recent change was an update to Pages etc. After 2-3 minutes the computer gets this weird pixelation and then freezes. He booted into Recovery and ran disc and permissions repair but it still happened. Also rest the NVRAM and SMC. I'm waiting to hear back from him

 

Unless anyone knows what going on, I'll probably tell him to boot into recovery again, leave it for 30 minutes and see if it happens there too. If not, tell him to reinstall the OS and restore from his last backup.

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Posted on Feb 16, 2016 9:26 PM

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