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Image distorted sometimes, after reboot

Im getting this issue on a A1278 Mid-2012, but is pretty occasionally, sometimes the image will get distorted but only on certain areas. After a PRAM reset or an SMC reset the issue get fixed, i haven’t seen it again. Anyone with experience on this?

Block Image

Block Image

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Try Running Diagnostics, restart the system and hold D key. You might also want to run a memory diagnostics to see if one of the memory SODIMM's is bad.

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