Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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My screen is going crazy at times

I changed out my ram the other night so instead of having two 1G of ram I installed two 4G rams and when we started the mac it came on then the screen went crazy and icons were everywhere we had to shut it down. We looked at the ram and I had bought both the same ram but one was miss packaged with the wrong ram brand inside the package so we took that one out and just started the mac with one 4g of ram. It started up fine and I used it for photoshop and lightroom for over an hour then when I get to open safari the screen started going crazy again such as icons and pictures moving and lines across the screen and it would freeze safari. If you can help me out i would appreciate it ! I am taking the ram back tonight and getting new ram and bringing my mac into best buy with me incase i cant fix the issue.

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Chosen Solution

It sounds like you have a bad GPU here, for some reason just happen to get into trouble when you altered the memory.

I suspect GPU had a cold solder joint on one of it's connections which broke fully as you stressed the logic board in the process of moving the memory modules around.

I would run Apple Hardware Test AHT to see if it can give you an error code. You may need to cool your system down in your refrigerator to get it to stabilize as the problem will happen more so as the system heats up.

Let us know what the error code is if you can get to give you one.

Otherwise, it's a question of what is the cheaper solution here. Apple was expected to no longer do repairs of these systems at the beginning of this month. So far I have not seen the letter so you may still have a chance to have them fix it otherwise you'll need to find an independent repair shop that can get a new logic board to swap out with yours. You may want to think about a new system if the price in repairing is high.

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