Video/System Lock Up and Mouse Unresponsive due to 8GB Memory?

Yesterday I received a MacBook (13-inch Late 2009) –MC207LL/A MacBook 6,1 - A1342 that I bought on eBay.

I had already bought a Crucial CT2KIT51264BC1067 8GB PC3-8500 1076MHz DDR3 (4GBx2) 204-PIN upgrade kit in advance for the MacBook after reading on that it would support 8GB of memory.

Since yesterday and again several times this morning I've experienced video/system lock ups (the display goes completely white or gray, sometimes half and half, sometimes white with multi-colored thin horizontal lines)

The mouse and touch pad become unresponsive, I have to force shutdown using the power button and it takes several restarts to clear the problem up.

Could this be due to too much memory ? Even though my Macbook recognizes the 8GB ?

I have removed one of the 4GB modules and replaced it with a 1GB that came with the MacBook so it's now running on 5GB to see if that helps.

The hard drive is a Crucial CT64M225 64GB M225 SSD that was installed in another MacBook (13.3" MB402LL/A 2.1GHz) with Snow Leopard 10.6.8 installed along with other software.

I didn't think installing the Crucial SSD into my current MacBook MC207LL/A without re-formatting and re-installing Snow Leopard would be necessary.


Since installing the original 2GB Hynix DDR3 RAM -PC3-8500 1066 MHz -1.5v -204-Pin Laptop SODIMM yesterday I've only experienced a video lock up once.

I was finally able to reach a friend who's been a tech support and computer guru for years and explained the symptoms to him, He said it sounds like the video cable is bad.

So I'm thinking about replacing the cable along with the LCD back cover because it has two cracks in it.

I'll keep this post updated on my progress and to see if anyone has any suggestions to fix the problem.

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So how does it run with the original RAM?


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